Year	including construction (current US$)
1960	47982855.08975157
1961	52915514.15892341
1962	55938906.08249736
1963	58908510.55895449
1964	66331021.45923531
1965	76715613.92155634
1966	85884663.94386904
1967	102845136.30594368
1968	134106360.0934954
1969	145021990.91159108
1970	154122708.0935771
1971	173956298.39906025
1972	220610774.54814112
1973	345911313.246637
1974	978377369.8979532
1975	1343829512.829139
1976	1876539330.3602042
1977	1636683947.745342
1978	1381750068.444932
1979	1871459774.915993
1980	2586147059.9935713
1981	2255903735.958016
1982	2193810961.9599967
1983	1927487444.722048
1984	2126068949.8212163
1985	2221972613.397913
1986	1616749797.0233855
1987	1603099459.1599808
1988	1378487342.9107194
1989	1746976494.802726
1990	2559273290.9699655
1991	2410362803.2732797
1992	2422613762.788973
1993	1981265105.9022067
1994	2205168668.097865
1995	2596622432.302331
1996	3152560530.3057594
1997	2857953629.268044
1998	1934225894.9894676
1999	2276274238.5038404
2000	2858036048.220844
2001	2396603671.44275
2002	2524504264.641908
2003	3063145170.7805996
2004	4001704546.126876
2005	5742230398.723898
2006	6141442621.617192
2007	7127260098.295039
2008	9614061896.465162
2009	6110967875.474627
2010	7932588057.781479
2011	11086655783.0558
2012	10100457053.184208
2013	9960707759.31589
2014	9597539416.781923
2015	6930303038.083662
2016	6316058788.778099
2017	6788036206.071832
2018	7949079350.209263
2019	8045524845.849906
2020	6369191473.331899
2021	10294728419.233515
2022	12086049071.60112
2023	10853355574.687706