Year	including construction (constant 2015 US$)
1968	10952497323.3127
1969	12467582967.636892
1970	14833920775.675892
1971	15887030195.335358
1972	15932152312.54463
1973	17385149953.19706
1974	18520489439.897724
1975	17703674979.259415
1976	16132349328.15396
1977	15808554367.897324
1978	14566799420.049236
1979	13568846700.171282
1980	14226977375.743626
1981	14297006608.119413
1982	13814310136.753586
1983	14360609781.972918
1984	16155090272.12401
1985	16205554535.549732
1986	16988654707.68059
1987	17146833126.743143
1988	16816469498.418892
1989	16078766213.784437
1990	13038429351.631016
1991	10446626794.443937
1992	7320579993.223781
1993	6259312384.497324
1994	6129361440.636495
1995	5494044769.052582
1996	5816915611.777378
1997	4662879722.455608
1998	4567909083.933442
1999	4838177060.428374
2000	5351601196.803959
2001	4919797268.108711
2002	5169583599.909412
2003	5294831575.940163
2004	5599258667.8222685
2005	6395945786.51826
2006	6562089178.178766
2007	6855539019.418747
2008	7160862145.256061
2009	7273272645.48227
2010	9358416310.172735
2011	10823754403.986511
2012	11793239749.470034
2013	13025749692.888805
2014	14930897733.850904
2015	15813527888.386517
2016	15891884889.20226
2017	17121354798.135168
2018	19195865669.66392
2019	19984254627.4061
2020	20827332125.02627
2021	22447215398.488583
2022	25961594504.540947
2023	29742196278.513626