Year	including construction (constant 2015 US$)
1970	48030903.715420336
1971	51014965.032553
1972	58002051.22320536
1973	63234435.55897353
1974	70514241.79711421
1975	74998479.87070648
1976	74607359.2764774
1977	85968306.61164688
1978	92462958.48724759
1979	97743572.03835963
1980	126956479.88792348
1981	131382979.0733532
1982	125424362.19413224
1983	121720102.74186035
1984	124082327.27058242
1985	124285661.42660546
1986	128490026.03480165
1987	144440221.13108468
1988	156050355.95768905
1989	184845020.76370654
1990	207206997.83527422
1991	224147632.4692736
1992	248026227.34516835
1993	270212101.6144673
1994	241266154.88917923
1995	239948167.96248105
1996	236818855.09118143
1997	238577453.64671555
1998	231514896.16664675
1999	253775702.36472446
2000	327542951.42062193
2001	322999370.323489
2002	323008960.723735
2003	289702683.13662565
2004	315166743.7669939
2005	312754577.5488763
2006	358036092.09965736
2007	380667330.0776515
2008	362349376.786979
2009	383318812.55468225
2010	340694177.4465658
2011	334055319.00730294
2012	300094796.07043785
2013	313171003.8993378
2014	334074377.94460905
2015	325963888.7854895
2016	351664395.09017223
2017	326806464.21114624
2018	326932537.494842
2019	343346683.1123304
2020	332032630.5103585
2021	393545790.0968425
2022	385002851.7255312
2023	367595848.1439532