Year	including construction (constant 2015 US$)
1991	20548.160255460854
1992	22696.714527211323
1993	26290.80617654117
1994	28759.88590756691
1995	31439.838969147866
1996	34495.14277039189
1997	34509.81589065591
1998	34461.550089185075
1999	34105.56260798413
2000	34652.263932900176
2001	34695.7269409486
2002	34785.255029287495
2003	33789.724050203025
2004	34014.69644224066
2005	34202.93160365378
2006	35166.2851788466
2007	35995.107214069736
2008	36443.73461914825
2009	34825.0152887102
2010	37266.86017236243
2011	37448.94842267978
2012	36708.12505199462
2013	36096.62085664335
2014	34427.95405927961
2015	34725.99283930938
2016	33730.87792970471
2017	35601.77067989344
2018	34709.64573180367
2019	32568.178171413758
2020	31484.399890411878
2021	33003.79422942403
2022	33911.36160447158