Year	including construction (constant 2015 US$)
1977	50472476.03460371
1978	47098484.139973514
1979	51780343.179279365
1980	59189894.006702535
1981	56599604.603434406
1982	64060045.20302395
1983	65118552.464084394
1984	62833601.69381447
1985	65581649.39079833
1986	69830945.36669005
1987	77846084.48289299
1988	95179140.8827579
1989	99291034.47380042
1990	103341860.33824329
1991	96258004.05268487
1992	97911921.64809182
1993	103591220.22185847
1994	106695496.32400692
1995	117916691.08669104
1996	123738481.02252352
1997	134552557.6078767
1998	139926517.54864517
1999	153605688.30696484
2000	224500229.91193193
2001	262224818.0188605
2002	256194380.0171459
2003	212556400.38448542
2004	203095991.73875764
2005	216922742.8363598
2006	204994180.24056315
2007	203910228.09341952
2008	212469887.77180263
2009	212337574.36417007
2010	195503237.73153555
2011	175101528.07003865
2012	159946553.9188943
2013	186312544.87828952
2014	206225712.7269893
2015	217655555.55555555
2016	224780123.65884706
2017	236729042.16351026
2018	219899794.5080924
2019	230942875.0681942
2020	193462557.86766425
2021	211141664.71826044
2022	211665829.371574
2023	206581941.13215384