Year	including construction (current US$)
1960	141666666.66666666
1961	144540229.88505748
1962	154885057.47126436
1963	174137931.03448275
1964	180172413.79310346
1965	173275862.06896552
1966	228448275.86206895
1967	236781609.1954023
1968	241379310.3448276
1969	250862068.96551725
1970	264080459.77011493
1971	273563218.3908046
1972	293103448.27586204
1973	372413793.1034483
1974	485919540.22988504
1975	595689655.1724138
1976	718965517.2413793
1977	828160919.5402299
1978	901061007.9575597
1982	1182457983.1932774
1983	1165461538.4615386
1984	1553000000
1985	1250737847.222222
1986	1565120000
1987	1900100000
1988	1869244444.4444447
1989	2945888888.8888893
1990	4937000000
1991	5355951696.377228
1992	822260653.584038
1993	1081361336.731235
1994	1280914957.7533848
1995	1405486387.7536263
1996	1314367216.9313524
1997	1639023622.50697
1998	1638564724.7361703
1999	1659194560.7688603
2000	2461231086.3498917
2001	3070680910.591758
2002	3768131959.1136994
2003	4237171023.13787
2004	5706289137.473101
2005	7731874610.53883
2006	10400660455.07943
2007	15649711224.641636
2008	18287687993.711494
2009	13241248538.461538
2010	12465980482.758621
2011	11185310421.052631
2012	6629989716.666667
2013	8706661068.49315
2014	8962777134.83146
2015	8313116393.939394
2016	7398333666.666667
2017	6860267223.809524
2018	6717589226.044227
2019	7029102330.578512
2020	6306680356.382978
2021	2522285130.6571207
2022	2516901068.4233027
2023	5721501168.591549