Year	including construction (constant 2015 US$)
1977	18190879.899263877
1978	20962244.413730938
1979	18575149.739957184
1980	24162989.073667884
1981	25083050.062711127
1982	26042652.88169795
1983	26336822.95814105
1984	28776191.857250307
1985	30018847.943898052
1986	29809457.561106004
1987	32310494.489676118
1988	37073898.873479724
1989	39380891.8136434
1990	42684287.365268044
1991	43715308.79921172
1992	46640532.40249377
1993	47091304.564311005
1994	47383826.92463921
1995	50663913.719139084
1996	52294366.219329074
1997	53862477.88862946
1998	57785154.78614539
1999	55281930.65350075
2000	67332892.8093168
2001	65975780.875335135
2002	54835953.940213494
2003	59094312.23482736
2004	61957195.00721979
2005	64493987.27957424
2006	66503280.213631906
2007	71970091.53779836
2008	77767788.81053278
2009	71471364.89068142
2010	73533407.75856875
2011	73461476.03061919
2012	71615228.34658052
2013	70181389.23611932
2014	72833272.27319303
2015	67774074.07407407
2016	74343838.56013377
2017	65093418.34582053
2018	90178409.6060966
2019	90811408.81205271
2020	62182581.088128395
2021	65299622.63260928
2022	65668872.169417016
2023	68958549.86097683