AIA Billings Index

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

wdt_ID Date Billings Index Inquiries Index Design Contracts Growth Line
1 January 1, 1996 53.1 63.8 0.0 50.0
2 February 1, 1996 51.3 64.6 0.0 50.0
3 March 1, 1996 55.2 65.9 0.0 50.0
4 April 1, 1996 54.2 62.6 0.0 50.0
5 May 1, 1996 55.0 62.4 0.0 50.0
6 June 1, 1996 55.5 60.9 0.0 50.0
7 July 1, 1996 57.0 60.2 0.0 50.0
8 August 1, 1996 50.2 53.7 0.0 50.0
9 September 1, 1996 57.3 60.5 0.0 50.0
10 October 1, 1996 52.0 65.6 0.0 50.0
11 November 1, 1996 53.1 55.0 0.0 50.0
12 December 1, 1996 44.6 54.2 0.0 50.0
13 January 1, 1997 52.7 65.1 0.0 50.0
14 February 1, 1997 59.2 61.7 0.0 50.0
15 March 1, 1997 54.9 57.0 0.0 50.0
16 April 1, 1997 57.9 58.3 0.0 50.0
17 May 1, 1997 54.2 60.1 0.0 50.0
18 June 1, 1997 50.6 57.3 0.0 50.0
19 July 1, 1997 53.9 60.3 0.0 50.0
20 August 1, 1997 55.5 62.7 0.0 50.0
21 September 1, 1997 53.6 62.7 0.0 50.0
22 October 1, 1997 56.9 60.9 0.0 50.0
23 November 1, 1997 56.8 62.4 0.0 50.0
24 December 1, 1997 51.2 58.5 0.0 50.0
25 January 1, 1998 58.1 60.7 0.0 50.0
26 February 1, 1998 55.8 59.7 0.0 50.0
27 March 1, 1998 47.8 62.0 0.0 50.0
28 April 1, 1998 52.9 61.2 0.0 50.0
29 May 1, 1998 56.7 62.5 0.0 50.0
30 June 1, 1998 58.2 64.6 0.0 50.0
31 July 1, 1998 53.5 63.6 0.0 50.0
32 August 1, 1998 62.3 60.8 0.0 50.0
33 September 1, 1998 51.5 62.7 0.0 50.0
34 October 1, 1998 54.0 62.0 0.0 50.0
35 November 1, 1998 54.5 63.2 0.0 50.0
36 December 1, 1998 55.2 60.1 0.0 50.0
37 January 1, 1999 54.1 62.8 0.0 50.0
38 February 1, 1999 53.9 59.0 0.0 50.0
39 March 1, 1999 53.6 61.1 0.0 50.0
40 April 1, 1999 52.0 62.2 0.0 50.0
41 May 1, 1999 52.9 60.2 0.0 50.0
42 June 1, 1999 53.4 64.1 0.0 50.0
43 July 1, 1999 55.8 61.9 0.0 50.0
44 August 1, 1999 51.4 67.3 0.0 50.0
45 September 1, 1999 56.0 61.4 0.0 50.0
46 October 1, 1999 53.9 63.5 0.0 50.0
47 November 1, 1999 55.4 60.8 0.0 50.0
48 December 1, 1999 57.8 64.2 0.0 50.0
49 January 1, 2000 54.8 62.6 0.0 50.0
50 February 1, 2000 55.5 65.2 0.0 50.0
51 March 1, 2000 53.7 63.2 0.0 50.0
52 April 1, 2000 54.1 62.2 0.0 50.0
53 May 1, 2000 51.4 55.3 0.0 50.0
54 June 1, 2000 50.4 57.4 0.0 50.0
55 July 1, 2000 51.4 60.4 0.0 50.0
56 August 1, 2000 52.5 60.2 0.0 50.0
57 September 1, 2000 54.1 62.3 0.0 50.0
58 October 1, 2000 54.5 60.7 0.0 50.0
59 November 1, 2000 50.8 59.6 0.0 50.0
60 December 1, 2000 53.3 58.7 0.0 50.0
61 January 1, 2001 45.7 56.1 0.0 50.0
62 February 1, 2001 45.3 50.3 0.0 50.0
63 March 1, 2001 46.2 51.9 0.0 50.0
64 April 1, 2001 49.7 58.2 0.0 50.0
65 May 1, 2001 47.7 55.7 0.0 50.0
66 June 1, 2001 44.0 54.5 0.0 50.0
67 July 1, 2001 48.3 52.6 0.0 50.0
68 August 1, 2001 52.7 52.4 0.0 50.0
69 September 1, 2001 45.2 49.2 0.0 50.0
70 October 1, 2001 40.1 50.2 0.0 50.0
71 November 1, 2001 45.7 54.1 0.0 50.0
72 December 1, 2001 45.7 56.4 0.0 50.0
73 January 1, 2002 46.8 57.0 0.0 50.0
74 February 1, 2002 47.3 57.4 0.0 50.0
75 March 1, 2002 49.5 60.4 0.0 50.0
76 April 1, 2002 46.6 56.8 0.0 50.0
77 May 1, 2002 51.1 56.3 0.0 50.0
78 June 1, 2002 51.7 57.4 0.0 50.0
79 July 1, 2002 49.3 58.1 0.0 50.0
80 August 1, 2002 50.5 57.7 0.0 50.0
81 September 1, 2002 50.1 64.0 0.0 50.0
82 October 1, 2002 49.3 58.7 0.0 50.0
83 November 1, 2002 50.4 56.6 0.0 50.0
84 December 1, 2002 47.8 50.8 0.0 50.0
85 January 1, 2003 48.5 56.4 0.0 50.0
86 February 1, 2003 47.9 57.3 0.0 50.0
87 March 1, 2003 47.7 54.8 0.0 50.0
88 April 1, 2003 49.8 55.7 0.0 50.0
89 May 1, 2003 48.6 56.6 0.0 50.0
90 June 1, 2003 50.2 65.0 0.0 50.0
91 July 1, 2003 47.8 55.5 0.0 50.0
92 August 1, 2003 43.7 55.8 0.0 50.0
93 September 1, 2003 53.6 59.7 0.0 50.0
94 October 1, 2003 48.4 61.4 0.0 50.0
95 November 1, 2003 48.7 60.1 0.0 50.0
96 December 1, 2003 50.2 62.3 0.0 50.0
97 January 1, 2004 52.0 60.0 0.0 50.0
98 February 1, 2004 54.8 63.4 0.0 50.0
99 March 1, 2004 55.5 65.6 0.0 50.0
100 April 1, 2004 52.2 64.1 0.0 50.0
101 May 1, 2004 51.5 58.0 0.0 50.0
102 June 1, 2004 52.2 65.1 0.0 50.0
103 July 1, 2004 49.9 65.2 0.0 50.0
104 August 1, 2004 53.3 66.6 0.0 50.0
105 September 1, 2004 50.0 61.8 0.0 50.0
106 October 1, 2004 54.5 62.4 0.0 50.0
107 November 1, 2004 51.3 63.3 0.0 50.0
108 December 1, 2004 47.8 62.3 0.0 50.0
109 January 1, 2005 56.7 64.1 0.0 50.0
110 February 1, 2005 55.8 61.9 0.0 50.0
111 March 1, 2005 56.3 64.9 0.0 50.0
112 April 1, 2005 56.0 63.8 0.0 50.0
113 May 1, 2005 57.5 65.5 0.0 50.0
114 June 1, 2005 53.2 63.4 0.0 50.0
115 July 1, 2005 59.2 62.6 0.0 50.0
116 August 1, 2005 56.3 62.8 0.0 50.0
117 September 1, 2005 61.2 61.8 0.0 50.0
118 October 1, 2005 58.6 64.7 0.0 50.0
119 November 1, 2005 57.4 66.4 0.0 50.0
120 December 1, 2005 49.7 64.1 0.0 50.0
121 January 1, 2006 53.1 62.6 0.0 50.0
122 February 1, 2006 56.0 64.4 0.0 50.0
123 March 1, 2006 52.9 61.3 0.0 50.0
124 April 1, 2006 54.9 62.1 0.0 50.0
125 May 1, 2006 51.6 61.7 0.0 50.0
126 June 1, 2006 50.4 57.5 0.0 50.0
127 July 1, 2006 50.4 62.1 0.0 50.0
128 August 1, 2006 59.3 63.6 0.0 50.0
129 September 1, 2006 53.0 66.4 0.0 50.0
130 October 1, 2006 51.8 63.4 0.0 50.0
131 November 1, 2006 55.0 62.7 0.0 50.0
132 December 1, 2006 54.4 59.0 0.0 50.0
133 January 1, 2007 55.8 64.5 0.0 50.0
134 February 1, 2007 53.4 63.0 0.0 50.0
135 March 1, 2007 54.7 63.2 0.0 50.0
136 April 1, 2007 54.0 63.9 0.0 50.0
137 May 1, 2007 57.0 63.3 0.0 50.0
138 June 1, 2007 59.0 63.5 0.0 50.0
139 July 1, 2007 57.9 63.8 0.0 50.0
140 August 1, 2007 53.4 60.0 0.0 50.0
141 September 1, 2007 51.9 59.3 0.0 50.0
142 October 1, 2007 54.2 58.8 0.0 50.0
143 November 1, 2007 54.2 58.2 0.0 50.0
144 December 1, 2007 51.8 58.5 0.0 50.0
145 January 1, 2008 50.2 57.9 0.0 50.0
146 February 1, 2008 42.6 54.7 0.0 50.0
147 March 1, 2008 41.1 49.0 0.0 50.0
148 April 1, 2008 46.1 54.0 0.0 50.0
149 May 1, 2008 44.7 46.9 0.0 50.0
150 June 1, 2008 46.4 52.2 0.0 50.0
151 July 1, 2008 45.9 53.6 0.0 50.0
152 August 1, 2008 46.5 51.9 0.0 50.0
153 September 1, 2008 41.2 49.2 0.0 50.0
154 October 1, 2008 37.0 40.2 0.0 50.0
155 November 1, 2008 34.2 39.2 0.0 50.0
156 December 1, 2008 34.1 38.5 0.0 50.0
157 January 1, 2009 33.3 43.5 0.0 50.0
158 February 1, 2009 35.3 49.5 0.0 50.0
159 March 1, 2009 43.7 56.6 0.0 50.0
160 April 1, 2009 42.8 56.8 0.0 50.0
161 May 1, 2009 42.9 55.2 0.0 50.0
162 June 1, 2009 37.7 53.8 0.0 50.0
163 July 1, 2009 43.1 50.3 0.0 50.0
164 August 1, 2009 41.7 55.2 0.0 50.0
165 September 1, 2009 43.1 59.1 0.0 50.0
166 October 1, 2009 46.1 58.5 0.0 50.0
167 November 1, 2009 42.8 58.5 0.0 50.0
168 December 1, 2009 43.4 55.3 0.0 50.0
169 January 1, 2010 42.5 52.5 0.0 50.0
170 February 1, 2010 44.8 52.0 0.0 50.0
171 March 1, 2010 46.1 58.5 0.0 50.0
172 April 1, 2010 48.4 59.6 0.0 50.0
173 May 1, 2010 45.8 55.5 0.0 50.0
174 June 1, 2010 46.0 57.7 0.0 50.0
175 July 1, 2010 47.9 53.1 0.0 50.0
176 August 1, 2010 48.2 54.6 0.0 50.0
177 September 1, 2010 50.4 62.3 0.0 50.0
178 October 1, 2010 48.7 61.7 0.0 50.0
179 November 1, 2010 52.0 61.4 0.0 50.0
180 December 1, 2010 54.2 62.6 0.0 50.0
181 January 1, 2011 50.0 56.5 0.0 50.0
182 February 1, 2011 50.6 56.4 0.0 50.0
183 March 1, 2011 50.5 58.7 0.0 50.0
184 April 1, 2011 47.6 55.0 0.0 50.0
185 May 1, 2011 47.2 52.6 0.0 50.0
186 June 1, 2011 46.3 58.1 0.0 50.0
187 July 1, 2011 45.1 53.7 0.0 50.0
188 August 1, 2011 51.4 56.9 0.0 50.0
189 September 1, 2011 46.9 54.3 0.0 50.0
190 October 1, 2011 49.4 57.3 0.0 50.0
191 November 1, 2011 52.0 65.0 0.0 50.0
192 December 1, 2011 51.0 61.5 0.0 50.0
193 January 1, 2012 50.9 61.2 0.0 50.0
194 February 1, 2012 51.0 63.4 0.0 50.0
195 March 1, 2012 50.4 56.6 0.0 50.0
196 April 1, 2012 48.4 54.4 0.0 50.0
197 May 1, 2012 45.8 54.0 0.0 50.0
198 June 1, 2012 45.9 54.4 0.0 50.0
199 July 1, 2012 48.7 56.3 0.0 50.0
200 August 1, 2012 50.2 57.2 0.0 50.0
201 September 1, 2012 51.6 57.3 0.0 50.0
202 October 1, 2012 52.8 59.4 0.0 50.0
203 November 1, 2012 53.2 59.6 0.0 50.0
204 December 1, 2012 51.2 57.9 0.0 50.0
205 January 1, 2013 54.2 63.2 0.0 50.0
206 February 1, 2013 54.9 64.8 0.0 50.0
207 March 1, 2013 51.9 60.1 0.0 50.0
208 April 1, 2013 48.6 58.5 0.0 50.0
209 May 1, 2013 52.9 59.1 0.0 50.0
210 June 1, 2013 51.6 62.6 0.0 50.0
211 July 1, 2013 52.7 66.7 0.0 50.0
212 August 1, 2013 53.8 63.0 0.0 50.0
213 September 1, 2013 54.3 58.6 0.0 50.0
214 October 1, 2013 51.6 61.5 0.0 50.0
215 November 1, 2013 49.8 57.8 0.0 50.0
216 December 1, 2013 48.5 59.2 0.0 50.0
217 January 1, 2014 50.4 58.5 0.0 50.0
218 February 1, 2014 50.7 56.8 0.0 50.0
219 March 1, 2014 48.8 57.9 0.0 50.0
220 April 1, 2014 49.6 59.1 0.0 50.0
221 May 1, 2014 52.6 63.2 0.0 50.0
222 June 1, 2014 53.5 66.4 0.0 50.0
223 July 1, 2014 55.8 66.0 0.0 50.0
224 August 1, 2014 53.0 62.6 0.0 50.0
225 September 1, 2014 55.2 64.8 0.0 50.0
226 October 1, 2014 53.7 62.7 0.0 50.0
227 November 1, 2014 50.9 58.8 0.0 50.0
228 December 1, 2014 52.7 59.1 0.0 50.0
229 January 1, 2015 49.9 58.7 0.0 50.0
230 February 1, 2015 50.4 56.6 0.0 50.0
231 March 1, 2015 51.7 58.2 0.0 50.0
232 April 1, 2015 48.8 60.1 0.0 50.0
233 May 1, 2015 51.9 61.5 0.0 50.0
234 June 1, 2015 55.7 63.4 0.0 50.0
235 July 1, 2015 54.7 63.7 0.0 50.0
236 August 1, 2015 49.1 61.8 0.0 50.0
237 September 1, 2015 53.7 61.0 0.0 50.0
238 October 1, 2015 53.1 58.5 0.0 50.0
239 November 1, 2015 49.3 58.6 0.0 50.0
240 December 1, 2015 51.3 60.5 0.0 50.0
241 January 1, 2016 49.6 55.3 0.0 50.0
242 February 1, 2016 50.3 59.5 0.0 50.0
243 March 1, 2016 51.9 58.1 0.0 50.0
244 April 1, 2016 50.6 56.9 0.0 50.0
245 May 1, 2016 53.1 60.1 0.0 50.0
246 June 1, 2016 52.6 58.6 0.0 50.0
247 July 1, 2016 51.5 57.5 0.0 50.0
248 August 1, 2016 49.7 61.8 0.0 50.0
249 September 1, 2016 48.4 59.4 0.0 50.0
250 October 1, 2016 50.8 55.4 0.0 50.0
251 November 1, 2016 50.6 59.5 0.0 50.0
252 December 1, 2016 55.6 57.6 50.7 50.0
253 January 1, 2017 49.5 60.0 52.1 50.0
254 February 1, 2017 50.7 61.5 54.7 50.0
255 March 1, 2017 54.3 59.8 52.3 50.0
256 April 1, 2017 50.9 60.2 53.2 50.0
257 May 1, 2017 53.0 62.4 54.8 50.0
258 June 1, 2017 54.2 58.6 53.7 50.0
259 July 1, 2017 51.9 59.5 56.4 50.0
260 August 1, 2017 53.7 62.5 54.2 50.0
261 September 1, 2017 49.1 59.0 52.9 50.0
262 October 1, 2017 51.7 60.2 52.8 50.0
263 November 1, 2017 55.0 61.1 53.2 50.0
264 December 1, 2017 52.8 62.0 53.4 50.0
265 January 1, 2018 54.7 61.1 53.9 50.0
266 February 1, 2018 52.0 62.4 54.5 50.0
267 March 1, 2018 51.0 58.1 51.5 50.0
268 April 1, 2018 52.0 56.7 50.1 50.0
269 May 1, 2018 52.8 59.3 53.3 50.0
270 June 1, 2018 51.3 56.0 54.1 50.0
271 July 1, 2018 50.7 60.5 53.8 50.0
272 August 1, 2018 54.2 58.0 49.6 50.0
273 September 1, 2018 51.1 58.8 54.1 50.0
274 October 1, 2018 50.4 58.6 52.8 50.0
275 November 1, 2018 54.7 63.1 54.6 50.0
276 December 1, 2018 51.0 55.6 52.1 50.0
277 January 1, 2019 55.3 59.6 53.8 50.0
278 February 1, 2019 50.3 59.8 53.1 50.0
279 March 1, 2019 47.8 59.8 50.8 50.0
280 April 1, 2019 50.5 60.9 52.1 50.0
281 May 1, 2019 50.2 56.2 50.9 50.0
282 June 1, 2019 49.1 52.8 50.3 50.0
283 July 1, 2019 50.1 54.9 49.0 50.0
284 August 1, 2019 47.2 54.5 47.9 50.0
285 September 1, 2019 49.7 59.0 54.4 50.0
286 October 1, 2019 52.0 57.9 52.9 50.0
287 November 1, 2019 51.9 60.9 52.9 50.0
288 December 1, 2019 52.1 58.7 53.4 50.0
289 January 1, 2020 52.2 57.9 56.0 50.0
290 February 1, 2020 53.4 56.5 52.0 50.0
291 March 1, 2020 33.3 23.8 27.1 50.0
292 April 1, 2020 29.5 28.4 27.6 50.0
293 May 1, 2020 32.0 38.0 33.1 50.0
294 June 1, 2020 40.0 49.3 44.0 50.0
295 July 1, 2020 40.0 49.1 41.7 50.0
296 August 1, 2020 40.0 51.6 46.0 50.0
297 September 1, 2020 47.0 57.2 48.9 50.0
298 October 1, 2020 47.5 59.1 51.7 50.0
299 November 1, 2020 46.3 52.0 48.6 50.0
300 December 1, 2020 42.3 51.7 47.0 50.0
301 January 1, 2021 44.9 56.8 48.8 50.0
302 February 1, 2021 53.3 61.2 51.6 50.0
303 March 1, 2021 55.6 66.9 55.7 50.0
304 April 1, 2021 57.9 70.8 61.7 50.0
305 May 1, 2021 58.5 69.2 63.2 50.0
306 June 1, 2021 57.1 71.8 58.9 50.0
307 July 1, 2021 54.6 65.0 58.0 50.0
308 August 1, 2021 55.6 64.7 56.6 50.0
309 September 1, 2021 56.6 61.8 54.7 50.0
310 October 1, 2021 54.3 62.9 58.0 50.0
311 November 1, 2021 51.0 59.4 55.8 50.0
312 December 1, 2021 51.0 66.8 55.8 50.0
313 January 1, 2022 51.0 61.9 56.1 50.0
314 February 1, 2022 51.3 62.5 55.2 50.0
315 March 1, 2022 58.0 63.9 60.5 50.0
316 April 1, 2022 56.5 62.3 55.4 50.0
317 May 1, 2022 53.5 63.9 56.9 50.0
318 June 1, 2022 53.2 58.2 52.2 50.0
319 July 1, 2022 51.0 56.1 52.9 50.0
320 August 1, 2022 53.3 57.9 52.3 50.0
321 September 1, 2022 51.7 53.6 50.7 50.0
322 October 1, 2022 47.7 52.3 48.6 50.0
323 November 1, 2022 46.6 52.0 46.9 50.0
324 December 1, 2022 47.5 52.3 49.4 50.0
325 January 1, 2023 49.3 55.2 53.4 50.0
326 February 1, 2023 48.0 60.0 51.3 50.0
327 March 1, 2023 50.4 53.0 48.9 50.0
328 April 1, 2023 48.5 53.9 49.8 50.0
329 May 1, 2023 51.0 57.2 52.3 50.0
330 June 1, 2023 50.1 56.7 52.7 50.0
331 July 1, 2023 50.0 54.5 50.0 50.0
332 August 1, 2023 48.1 54.8 47.9 50.0
333 September 1, 2023 44.8 53.7 46.2 50.0
334 October 1, 2023 44.3 48.8 46.5 50.0
335 November 1, 2023 45.3 56.9 48.1 50.0
336 December 1, 2023 45.4 53.1 50.0 50.0
337 January 1, 2024 46.2 53.8 49.7 50.0
338 February 1, 2024 49.5 56.0 51.1 50.0
339 March 1, 2024 43.6 54.9 50.0 50.0
340 April 1, 2024 48.3 54.8 49.2 50.0
Date Billings Index Inquiries Index Design Contracts Growth Line