Year	including construction (constant 2015 US$)
1977	21933305671.29832
1978	21562051639.672943
1979	21902051988.354053
1980	21666858208.825123
1981	23272758590.630943
1982	23551202775.50167
1983	24472105162.223892
1984	26217078400.948414
1985	25347296849.666138
1986	25621266061.1238
1987	25018566571.941628
1988	24547992119.806828
1989	24514498509.388237
1990	23462257710.211124
1991	22496905455.11602
1992	23062945309.367313
1993	24629175543.50668
1994	26219260447.357864
1995	26923896860.126568
1996	27731202426.820545
1997	28041094858.69697
1998	27477445562.16112
1999	28880629718.091316
2000	29162779685.838314
2001	29443501455.74365
2002	31807048240.032078
2003	32818961976.324554
2004	34144099443.85363
2005	34630273889.01481
2006	34644384316.32351
2007	36689681479.80265
2008	34438110148.363815
2009	34041166687.0064
2010	34104024128.733067
2011	33564603985.42513
2012	34251200334.733868
2013	34953736989.835945
2014	36413252671.769035
2015	37679875869.52353
2016	38829341515.716805
2017	40150967067.06882
2018	41259203263.65523
2019	42032425948.84849
2020	41382521313.13308
2021	41624495545.59878
2022	40559550201.36335