Year	including construction (constant 2015 US$)
1966	2724470168.7724876
1967	2707590308.2014475
1968	2909163392.250451
1969	2893140223.4640164
1970	3313980150.325791
1971	3405705516.682766
1972	3605521766.918177
1973	3590826839.374049
1974	3546271000.641929
1975	3403949011.1954246
1976	3009928374.1844754
1977	2829133793.8917117
1978	2796274051.4840794
1979	2706304860.551018
1980	2449379655.1481423
1981	2470586751.475667
1982	2427315867.036011
1983	2498691158.913494
1984	2408294032.06165
1985	2298446316.1067977
1986	2350988720.424381
1987	2546202046.820272
1988	2715936340.653558
1989	3084198308.4179754
1990	3252280613.9537945
1991	3188487492.214029
1992	3211588690.522843
1993	3283974751.266935
1994	3280344053.5716476
1995	3318422949.973894
1996	3188794882.0206256
1997	3122313159.150462
1998	3039640956.605621
1999	3026542650.0876946
2000	3015841646.3542166
2001	3017161900.0615935
2002	3008771340.3160257
2003	3093284949.347472
2004	3211656117.2694197
2005	3273690669.756839
2006	3230730308.989158
2007	3279371235.050422
2008	3175053820.4083185
2009	2763742675.282408
2010	2674312858.366913
2011	2750922316.913404
2012	2672089273.175541
2013	2686143026.4553847
2014	2690781286.1905127
2015	2733637416.4023476
2016	2763152035.46595
2017	2786221731.8264356
2018	2918855114.1399183
2019	2896984069.171657
2020	2731917612.230896
2021	2796940107.3192215
2022	2786204360.067128
2023	2924883114.6196537