The Architecture Billings Index (ABI), produced by the AIA Economics & Market Research Group, is a leading economic indicator that provides an approximately 9 to 12 month glimpse into the future of nonresidential construction spending activity.
The diffusion indexes contained in the full report are derived from a monthly “Work-on-the-Boards” survey that is sent to a panel of AIA member-owned firms. Participants are asked whether their billings increased, decreased, or stayed the same in the month that just ended as compared to the prior month, and the results are then compiled into the ABI. These monthly results are also seasonally adjusted to allow for comparison to prior months.
The monthly ABI index scores are centered around 50, with scores above 50 indicating an aggregate increase in billings, and scores below 50 indicating a decline. The regional and sector data are formulated using a three-month moving average. More information on the ABI and the analysis of its relationship to construction activity can be found in the White Paper Architecture Billings as a Leading Indicator of Construction: Analysis of the Relationship Between a Billings Index and Construction Spending on the AIA web site.
Steel Market Update has been collecting AIA Billings Index data through their press releases for years. The two most referenced pieces of data are the Billings Index and Inquiries Index.
AIA Billings Index
1
January 1, 1996
53.1000
63.8000
0
50.00
2
February 1, 1996
51.3000
64.6000
0
50.00
3
March 1, 1996
55.2000
65.9000
0
50.00
4
April 1, 1996
54.2000
62.6000
0
50.00
5
May 1, 1996
55.0000
62.4000
0
50.00
6
June 1, 1996
55.5000
60.9000
0
50.00
7
July 1, 1996
57.0000
60.2000
0
50.00
8
August 1, 1996
50.2000
53.7000
0
50.00
9
September 1, 1996
57.3000
60.5000
0
50.00
10
October 1, 1996
52.0000
65.6000
0
50.00
11
November 1, 1996
53.1000
55.0000
0
50.00
12
December 1, 1996
44.6000
54.2000
0
50.00
13
January 1, 1997
52.7000
65.1000
0
50.00
14
February 1, 1997
59.2000
61.7000
0
50.00
15
March 1, 1997
54.9000
57.0000
0
50.00
16
April 1, 1997
57.9000
58.3000
0
50.00
17
May 1, 1997
54.2000
60.1000
0
50.00
18
June 1, 1997
50.6000
57.3000
0
50.00
19
July 1, 1997
53.9000
60.3000
0
50.00
20
August 1, 1997
55.5000
62.7000
0
50.00
21
September 1, 1997
53.6000
62.7000
0
50.00
22
October 1, 1997
56.9000
60.9000
0
50.00
23
November 1, 1997
56.8000
62.4000
0
50.00
24
December 1, 1997
51.2000
58.5000
0
50.00
25
January 1, 1998
58.1000
60.7000
0
50.00
26
February 1, 1998
55.8000
59.7000
0
50.00
27
March 1, 1998
47.8000
62.0000
0
50.00
28
April 1, 1998
52.9000
61.2000
0
50.00
29
May 1, 1998
56.7000
62.5000
0
50.00
30
June 1, 1998
58.2000
64.6000
0
50.00
31
July 1, 1998
53.5000
63.6000
0
50.00
32
August 1, 1998
62.3000
60.8000
0
50.00
33
September 1, 1998
51.5000
62.7000
0
50.00
34
October 1, 1998
54.0000
62.0000
0
50.00
35
November 1, 1998
54.5000
63.2000
0
50.00
36
December 1, 1998
55.2000
60.1000
0
50.00
37
January 1, 1999
54.1000
62.8000
0
50.00
38
February 1, 1999
53.9000
59.0000
0
50.00
39
March 1, 1999
53.6000
61.1000
0
50.00
40
April 1, 1999
52.0000
62.2000
0
50.00
41
May 1, 1999
52.9000
60.2000
0
50.00
42
June 1, 1999
53.4000
64.1000
0
50.00
43
July 1, 1999
55.8000
61.9000
0
50.00
44
August 1, 1999
51.4000
67.3000
0
50.00
45
September 1, 1999
56.0000
61.4000
0
50.00
46
October 1, 1999
53.9000
63.5000
0
50.00
47
November 1, 1999
55.4000
60.8000
0
50.00
48
December 1, 1999
57.8000
64.2000
0
50.00
49
January 1, 2000
54.8000
62.6000
0
50.00
50
February 1, 2000
55.5000
65.2000
0
50.00
51
March 1, 2000
53.7000
63.2000
0
50.00
52
April 1, 2000
54.1000
62.2000
0
50.00
53
May 1, 2000
51.4000
55.3000
0
50.00
54
June 1, 2000
50.4000
57.4000
0
50.00
55
July 1, 2000
51.4000
60.4000
0
50.00
56
August 1, 2000
52.5000
60.2000
0
50.00
57
September 1, 2000
54.1000
62.3000
0
50.00
58
October 1, 2000
54.5000
60.7000
0
50.00
59
November 1, 2000
50.8000
59.6000
0
50.00
60
December 1, 2000
53.3000
58.7000
0
50.00
61
January 1, 2001
45.7000
56.1000
0
50.00
62
February 1, 2001
45.3000
50.3000
0
50.00
63
March 1, 2001
46.2000
51.9000
0
50.00
64
April 1, 2001
49.7000
58.2000
0
50.00
65
May 1, 2001
47.7000
55.7000
0
50.00
66
June 1, 2001
44.0000
54.5000
0
50.00
67
July 1, 2001
48.3000
52.6000
0
50.00
68
August 1, 2001
52.7000
52.4000
0
50.00
69
September 1, 2001
45.2000
49.2000
0
50.00
70
October 1, 2001
40.1000
50.2000
0
50.00
71
November 1, 2001
45.7000
54.1000
0
50.00
72
December 1, 2001
45.7000
56.4000
0
50.00
73
January 1, 2002
46.8000
57.0000
0
50.00
74
February 1, 2002
47.3000
57.4000
0
50.00
75
March 1, 2002
49.5000
60.4000
0
50.00
76
April 1, 2002
46.6000
56.8000
0
50.00
77
May 1, 2002
51.1000
56.3000
0
50.00
78
June 1, 2002
51.7000
57.4000
0
50.00
79
July 1, 2002
49.3000
58.1000
0
50.00
80
August 1, 2002
50.5000
57.7000
0
50.00
81
September 1, 2002
50.1000
64.0000
0
50.00
82
October 1, 2002
49.3000
58.7000
0
50.00
83
November 1, 2002
50.4000
56.6000
0
50.00
84
December 1, 2002
47.8000
50.8000
0
50.00
85
January 1, 2003
48.5000
56.4000
0
50.00
86
February 1, 2003
47.9000
57.3000
0
50.00
87
March 1, 2003
47.7000
54.8000
0
50.00
88
April 1, 2003
49.8000
55.7000
0
50.00
89
May 1, 2003
48.6000
56.6000
0
50.00
90
June 1, 2003
50.2000
65.0000
0
50.00
91
July 1, 2003
47.8000
55.5000
0
50.00
92
August 1, 2003
43.7000
55.8000
0
50.00
93
September 1, 2003
53.6000
59.7000
0
50.00
94
October 1, 2003
48.4000
61.4000
0
50.00
95
November 1, 2003
48.7000
60.1000
0
50.00
96
December 1, 2003
50.2000
62.3000
0
50.00
97
January 1, 2004
52.0000
60.0000
0
50.00
98
February 1, 2004
54.8000
63.4000
0
50.00
99
March 1, 2004
55.5000
65.6000
0
50.00
100
April 1, 2004
52.2000
64.1000
0
50.00
101
May 1, 2004
51.5000
58.0000
0
50.00
102
June 1, 2004
52.2000
65.1000
0
50.00
103
July 1, 2004
49.9000
65.2000
0
50.00
104
August 1, 2004
53.3000
66.6000
0
50.00
105
September 1, 2004
50.0000
61.8000
0
50.00
106
October 1, 2004
54.5000
62.4000
0
50.00
107
November 1, 2004
51.3000
63.3000
0
50.00
108
December 1, 2004
47.8000
62.3000
0
50.00
109
January 1, 2005
56.7000
64.1000
0
50.00
110
February 1, 2005
55.8000
61.9000
0
50.00
111
March 1, 2005
56.3000
64.9000
0
50.00
112
April 1, 2005
56.0000
63.8000
0
50.00
113
May 1, 2005
57.5000
65.5000
0
50.00
114
June 1, 2005
53.2000
63.4000
0
50.00
115
July 1, 2005
59.2000
62.6000
0
50.00
116
August 1, 2005
56.3000
62.8000
0
50.00
117
September 1, 2005
61.2000
61.8000
0
50.00
118
October 1, 2005
58.6000
64.7000
0
50.00
119
November 1, 2005
57.4000
66.4000
0
50.00
120
December 1, 2005
49.7000
64.1000
0
50.00
121
January 1, 2006
53.1000
62.6000
0
50.00
122
February 1, 2006
56.0000
64.4000
0
50.00
123
March 1, 2006
52.9000
61.3000
0
50.00
124
April 1, 2006
54.9000
62.1000
0
50.00
125
May 1, 2006
51.6000
61.7000
0
50.00
126
June 1, 2006
50.4000
57.5000
0
50.00
127
July 1, 2006
50.4000
62.1000
0
50.00
128
August 1, 2006
59.3000
63.6000
0
50.00
129
September 1, 2006
53.0000
66.4000
0
50.00
130
October 1, 2006
51.8000
63.4000
0
50.00
131
November 1, 2006
55.0000
62.7000
0
50.00
132
December 1, 2006
54.4000
59.0000
0
50.00
133
January 1, 2007
55.8000
64.5000
0
50.00
134
February 1, 2007
53.4000
63.0000
0
50.00
135
March 1, 2007
54.7000
63.2000
0
50.00
136
April 1, 2007
54.0000
63.9000
0
50.00
137
May 1, 2007
57.0000
63.3000
0
50.00
138
June 1, 2007
59.0000
63.5000
0
50.00
139
July 1, 2007
57.9000
63.8000
0
50.00
140
August 1, 2007
53.4000
60.0000
0
50.00
141
September 1, 2007
51.9000
59.3000
0
50.00
142
October 1, 2007
54.2000
58.8000
0
50.00
143
November 1, 2007
54.2000
58.2000
0
50.00
144
December 1, 2007
51.8000
58.5000
0
50.00
145
January 1, 2008
50.2000
57.9000
0
50.00
146
February 1, 2008
42.6000
54.7000
0
50.00
147
March 1, 2008
41.1000
49.0000
0
50.00
148
April 1, 2008
46.1000
54.0000
0
50.00
149
May 1, 2008
44.7000
46.9000
0
50.00
150
June 1, 2008
46.4000
52.2000
0
50.00
151
July 1, 2008
45.9000
53.6000
0
50.00
152
August 1, 2008
46.5000
51.9000
0
50.00
153
September 1, 2008
41.2000
49.2000
0
50.00
154
October 1, 2008
37.0000
40.2000
0
50.00
155
November 1, 2008
34.2000
39.2000
0
50.00
156
December 1, 2008
34.1000
38.5000
0
50.00
157
January 1, 2009
33.3000
43.5000
0
50.00
158
February 1, 2009
35.3000
49.5000
0
50.00
159
March 1, 2009
43.7000
56.6000
0
50.00
160
April 1, 2009
42.8000
56.8000
0
50.00
161
May 1, 2009
42.9000
55.2000
0
50.00
162
June 1, 2009
37.7000
53.8000
0
50.00
163
July 1, 2009
43.1000
50.3000
0
50.00
164
August 1, 2009
41.7000
55.2000
0
50.00
165
September 1, 2009
43.1000
59.1000
0
50.00
166
October 1, 2009
46.1000
58.5000
0
50.00
167
November 1, 2009
42.8000
58.5000
0
50.00
168
December 1, 2009
43.4000
55.3000
0
50.00
169
January 1, 2010
42.5000
52.5000
0
50.00
170
February 1, 2010
44.8000
52.0000
0
50.00
171
March 1, 2010
46.1000
58.5000
0
50.00
172
April 1, 2010
48.4000
59.6000
0
50.00
173
May 1, 2010
45.8000
55.5000
0
50.00
174
June 1, 2010
46.0000
57.7000
0
50.00
175
July 1, 2010
47.9000
53.1000
0
50.00
176
August 1, 2010
48.2000
54.6000
0
50.00
177
September 1, 2010
50.4000
62.3000
0
50.00
178
October 1, 2010
48.7000
61.7000
0
50.00
179
November 1, 2010
52.0000
61.4000
0
50.00
180
December 1, 2010
54.2000
62.6000
0
50.00
181
January 1, 2011
50.0000
56.5000
0
50.00
182
February 1, 2011
50.6000
56.4000
0
50.00
183
March 1, 2011
50.5000
58.7000
0
50.00
184
April 1, 2011
47.6000
55.0000
0
50.00
185
May 1, 2011
47.2000
52.6000
0
50.00
186
June 1, 2011
46.3000
58.1000
0
50.00
187
July 1, 2011
45.1000
53.7000
0
50.00
188
August 1, 2011
51.4000
56.9000
0
50.00
189
September 1, 2011
46.9000
54.3000
0
50.00
190
October 1, 2011
49.4000
57.3000
0
50.00
191
November 1, 2011
52.0000
65.0000
0
50.00
192
December 1, 2011
51.0000
61.5000
0
50.00
193
January 1, 2012
50.9000
61.2000
0
50.00
194
February 1, 2012
51.0000
63.4000
0
50.00
195
March 1, 2012
50.4000
56.6000
0
50.00
196
April 1, 2012
48.4000
54.4000
0
50.00
197
May 1, 2012
45.8000
54.0000
0
50.00
198
June 1, 2012
45.9000
54.4000
0
50.00
199
July 1, 2012
48.7000
56.3000
0
50.00
200
August 1, 2012
50.2000
57.2000
0
50.00
201
September 1, 2012
51.6000
57.3000
0
50.00
202
October 1, 2012
52.8000
59.4000
0
50.00
203
November 1, 2012
53.2000
59.6000
0
50.00
204
December 1, 2012
51.2000
57.9000
0
50.00
205
January 1, 2013
54.2000
63.2000
0
50.00
206
February 1, 2013
54.9000
64.8000
0
50.00
207
March 1, 2013
51.9000
60.1000
0
50.00
208
April 1, 2013
48.6000
58.5000
0
50.00
209
May 1, 2013
52.9000
59.1000
0
50.00
210
June 1, 2013
51.6000
62.6000
0
50.00
211
July 1, 2013
52.7000
66.7000
0
50.00
212
August 1, 2013
53.8000
63.0000
0
50.00
213
September 1, 2013
54.3000
58.6000
0
50.00
214
October 1, 2013
51.6000
61.5000
0
50.00
215
November 1, 2013
49.8000
57.8000
0
50.00
216
December 1, 2013
48.5000
59.2000
0
50.00
217
January 1, 2014
50.4000
58.5000
0
50.00
218
February 1, 2014
50.7000
56.8000
0
50.00
219
March 1, 2014
48.8000
57.9000
0
50.00
220
April 1, 2014
49.6000
59.1000
0
50.00
221
May 1, 2014
52.6000
63.2000
0
50.00
222
June 1, 2014
53.5000
66.4000
0
50.00
223
July 1, 2014
55.8000
66.0000
0
50.00
224
August 1, 2014
53.0000
62.6000
0
50.00
225
September 1, 2014
55.2000
64.8000
0
50.00
226
October 1, 2014
53.7000
62.7000
0
50.00
227
November 1, 2014
50.9000
58.8000
0
50.00
228
December 1, 2014
52.7000
59.1000
0
50.00
229
January 1, 2015
49.9000
58.7000
0
50.00
230
February 1, 2015
50.4000
56.6000
0
50.00
231
March 1, 2015
51.7000
58.2000
0
50.00
232
April 1, 2015
48.8000
60.1000
0
50.00
233
May 1, 2015
51.9000
61.5000
0
50.00
234
June 1, 2015
55.7000
63.4000
0
50.00
235
July 1, 2015
54.7000
63.7000
0
50.00
236
August 1, 2015
49.1000
61.8000
0
50.00
237
September 1, 2015
53.7000
61.0000
0
50.00
238
October 1, 2015
53.1000
58.5000
0
50.00
239
November 1, 2015
49.3000
58.6000
0
50.00
240
December 1, 2015
51.3000
60.5000
0
50.00
241
January 1, 2016
49.6000
55.3000
0
50.00
242
February 1, 2016
50.3000
59.5000
0
50.00
243
March 1, 2016
51.9000
58.1000
0
50.00
244
April 1, 2016
50.6000
56.9000
0
50.00
245
May 1, 2016
53.1000
60.1000
0
50.00
246
June 1, 2016
52.6000
58.6000
0
50.00
247
July 1, 2016
51.5000
57.5000
0
50.00
248
August 1, 2016
49.7000
61.8000
0
50.00
249
September 1, 2016
48.4000
59.4000
0
50.00
250
October 1, 2016
50.8000
55.4000
0
50.00
251
November 1, 2016
50.6000
59.5000
0
50.00
252
December 1, 2016
55.6000
57.6000
51
50.00
253
January 1, 2017
49.5000
60.0000
52
50.00
254
February 1, 2017
50.7000
61.5000
55
50.00
255
March 1, 2017
54.3000
59.8000
52
50.00
256
April 1, 2017
50.9000
60.2000
53
50.00
257
May 1, 2017
53.0000
62.4000
55
50.00
258
June 1, 2017
54.2000
58.6000
54
50.00
259
July 1, 2017
51.9000
59.5000
56
50.00
260
August 1, 2017
53.7000
62.5000
54
50.00
261
September 1, 2017
49.1000
59.0000
53
50.00
262
October 1, 2017
51.7000
60.2000
53
50.00
263
November 1, 2017
55.0000
61.1000
53
50.00
264
December 1, 2017
52.8000
62.0000
53
50.00
265
January 1, 2018
54.7000
61.1000
54
50.00
266
February 1, 2018
52.0000
62.4000
55
50.00
267
March 1, 2018
51.0000
58.1000
52
50.00
268
April 1, 2018
52.0000
56.7000
50
50.00
269
May 1, 2018
52.8000
59.3000
53
50.00
270
June 1, 2018
51.3000
56.0000
54
50.00
271
July 1, 2018
50.7000
60.5000
54
50.00
272
August 1, 2018
54.2000
58.0000
50
50.00
273
September 1, 2018
51.1000
58.8000
54
50.00
274
October 1, 2018
50.4000
58.6000
53
50.00
275
November 1, 2018
54.7000
63.1000
55
50.00
276
December 1, 2018
51.0000
55.6000
52
50.00
277
January 1, 2019
55.3000
59.6000
54
50.00
278
February 1, 2019
50.3000
59.8000
53
50.00
279
March 1, 2019
47.8000
59.8000
51
50.00
280
April 1, 2019
50.5000
60.9000
52
50.00
281
May 1, 2019
50.2000
56.2000
51
50.00
282
June 1, 2019
49.1000
52.8000
50
50.00
283
July 1, 2019
50.1000
54.9000
49
50.00
284
August 1, 2019
47.2000
54.5000
48
50.00
285
September 1, 2019
49.7000
59.0000
54
50.00
286
October 1, 2019
52.0000
57.9000
53
50.00
287
November 1, 2019
51.9000
60.9000
53
50.00
288
December 1, 2019
52.1000
58.7000
53
50.00
289
January 1, 2020
52.2000
57.9000
56
50.00
290
February 1, 2020
53.4000
56.5000
52
50.00
291
March 1, 2020
33.3000
23.8000
27
50.00
292
April 1, 2020
29.5000
28.4000
28
50.00
293
May 1, 2020
32.0000
38.0000
33
50.00
294
June 1, 2020
40.0000
49.3000
44
50.00
295
July 1, 2020
40.0000
49.1000
42
50.00
296
August 1, 2020
40.0000
51.6000
46
50.00
297
September 1, 2020
47.0000
57.2000
49
50.00
298
October 1, 2020
47.5000
59.1000
52
50.00
299
November 1, 2020
46.3000
52.0000
49
50.00
300
December 1, 2020
42.3000
51.7000
47
50.00
301
January 1, 2021
44.9000
56.8000
49
50.00
302
February 1, 2021
53.3000
61.2000
52
50.00
303
March 1, 2021
55.6000
66.9000
56
50.00
304
April 1, 2021
57.9000
70.8000
62
50.00
305
May 1, 2021
58.5000
69.2000
63
50.00
306
June 1, 2021
57.1000
71.8000
59
50.00
307
July 1, 2021
54.6000
65.0000
58
50.00
308
August 1, 2021
55.6000
64.7000
57
50.00
309
September 1, 2021
56.6000
61.8000
55
50.00
310
October 1, 2021
54.3000
62.9000
58
50.00
311
November 1, 2021
51.0000
59.4000
56
50.00
312
December 1, 2021
51.0000
66.8000
56
50.00
313
January 1, 2022
51.0000
61.9000
56
50.00
314
February 1, 2022
51.3000
62.5000
55
50.00
315
March 1, 2022
58.0000
63.9000
61
50.00
316
April 1, 2022
56.5000
62.3000
55
50.00
317
May 1, 2022
53.5000
63.9000
57
50.00
318
June 1, 2022
53.2000
58.2000
52
50.00
319
July 1, 2022
51.0000
56.1000
53
50.00
320
August 1, 2022
53.3000
57.9000
52
50.00
321
September 1, 2022
51.7000
53.6000
51
50.00
322
October 1, 2022
47.7000
52.3000
49
50.00
323
November 1, 2022
46.6000
52.0000
47
50.00
324
December 1, 2022
47.5000
52.3000
49
50.00
325
January 1, 2023
49.3000
55.2000
53
50.00
326
February 1, 2023
48.0000
60.0000
51
50.00
327
March 1, 2023
50.4000
53.0000
49
50.00
328
April 1, 2023
48.5000
53.9000
50
50.00
329
May 1, 2023
51.0000
57.2000
52
50.00
330
June 1, 2023
50.1000
56.7000
53
50.00
331
July 1, 2023
50.0000
54.5000
50
50.00
332
August 1, 2023
48.1000
54.8000
48
50.00
333
September 1, 2023
44.8000
53.7000
46
50.00
334
October 1, 2023
44.3000
48.8000
47
50.00