Year	including construction (constant 2015 US$)
1975	25619126406.53553
1976	24807394571.112484
1977	24986303524.725765
1978	25441451231.256622
1979	26789278614.684746
1980	28687565299.999977
1981	28967162548.437477
1982	29529685583.984352
1983	30559313546.484352
1984	30780106611.718727
1985	31794201393.749973
1986	32426623741.40622
1987	33741396516.796844
1988	35623130379.296844
1989	38370284296.484344
1990	38173900514.84372
1991	34199625340.624973
1992	33214377893.749973
1993	32818281791.79685
1994	34225144137.10935
1995	34546902875.390594
1996	36678277138.28122
1997	40144395408.59372
1998	43403034768.359344
1999	45735230864.45309
2000	50125573372.656204
2001	50671453714.843704
2002	52097177779.29683
2003	53828017888.67184
2004	56490848826.17184
2005	58617785037.49996
2006	63711558718.35934
2007	69012811309.76558
2008	67258671429.687454
2009	55210470950.39059
2010	59701779131.64058
2011	59766130879.29683
2012	55184952153.90621
2013	54896478802.34371
2014	54361693589.06246
2015	54660152556.640594
2016	56772665100.3906
2017	60289820963.67185
2018	58865206412.10935
2019	59280164233.2031
2020	58522366928.90623
2021	58507943261.3281
2022	58207265267.96873
2023	56623990373.04685