Year	including construction (constant 2010 US$)
1967	4737908256.75415
1968	4920094292.3661
1969	5304048716.9048
1970	5483505028.82174
1971	5920418284.28049
1972	6258434499.16735
1973	6613600670.89971
1974	7042379577.38334
1975	7921195655.42803
1976	8677089991.30047
1977	9355135626.79477
1978	9231975814.15274
1979	9844030567.07182
1980	9648970053.89822
1981	9934660109.45198
1982	10003056629.5954
1983	10110211681.2371
1984	10469006121.0684
1985	10801615555.1352
1986	10773412304.9036
1987	10857380885.4173
1988	11916896074.6248
1989	11605327182.3651
1990	12535505783.5224
1991	12597164030.6797
1992	12914415750.1763
1993	12792173744.5027
1994	13215692131.1071
1995	13595044422.8085
1996	13993418709.7997
1997	14805820952.6226
1998	15374794163.043
1999	15714652238.814
2000	16356645080.9739
2001	17032978229.1732
2002	17499483451.8115
2003	18176369228.2967
2004	18835081441.0234
2005	19731439962.6794
2006	20600905665.1337
2007	21928843963.5182
2008	23222579855.5057
2009	21695290517.0723
2010	23916979518.1295
2011	25424127600.5558
2012	25618441981.1066
2013	25770277120.9717
2014	26666968035.1348
2015	27146074558.3949
2016	27421077528.9616
2017	28269838569.4229
2018	29139136098.5679