Year	including construction (current US$)
1970	489140691.720918
1971	602456347.4762971
1972	648209542.1080937
1973	691852845.5946172
1974	1245196964.0105703
1975	1579383514.5287633
1976	1829268246.3723383
1977	1776353281.16107
1978	2247995351.7916603
1979	2607133789.6459317
1980	2958980927.679845
1981	3997923973.8172994
1982	3813382747.3317895
1983	4003311872.7865043
1984	4014635750.143459
1985	3647311706.341403
1986	3008672956.925609
1987	2214387280.6374826
1988	2111462874.5401342
1989	2344339538.2784605
1990	2972568911.365726
1991	2826166666.6666665
1992	2299928597.862542
1993	2479046748.782622
1994	1815460000
1995	2063512974.051896
1996	3522674650.6986027
1997	4144747081.7120624
1998	4022250000
1999	4756492248.062016
2000	6309650408.205987
2001	6096197797.631414
2002	6023851159.007727
2003	6168888437.30949
2004	7531980198.019802
2005	9000306513.409962
2006	11807390029.325514
2007	13781597917.501001
2008	17987569327.668793
2009	14771033989.277119
2010	18679096126.75979
2011	22783219703.422703
2012	10818661690.72018
2013	4954445884.1283865
2014	4191875913.9088454
2015	2550937095.8307056
2016	2045485935.8834653
2017	2816736829.281919
2018	3976219519.462694
2019	3594328031.782495
2020	2486038419.3529377
2021	2596359133.5992417