Year	including construction (constant 2010 US$)
1960	421304220.671882
1961	479763700.856738
1962	503472136.002604
1963	483150810.326355
1964	500084861.929474
1965	550883880.684069
1966	581364701.229166
1967	733764491.342606
1968	737865931.394075
1969	764245311.887703
1970	880850193.009568
1971	889508761.478417
1972	949841980.707295
1973	1087773816.20888
1974	1358465953.99601
1975	1716746761.49955
1976	1885701605.774
1977	1508963774.84725
1978	1576440832.35123
1979	1962464303.85934
1980	2448223931.0109
1981	2355229282.57893
1982	3314567904.10147
1983	3893943595.162
1984	4228095155.05987
1985	4023292585.53614
1986	3676233072.91163
1987	3734682648.259
1988	3845868886.21414
1989	4244263731.62259
1990	4432844176.91376
1991	4447873193.33533
1992	4585213180.44489
1993	4807455736.94922
1994	4657268720.45158
1995	4893734013.84183
1996	5207825310.6667
1997	5856521514.09147
1998	6186865132.02124
1999	6382322307.02565
2000	6570685979.5093
2001	6365146288.25815
2002	6452457716.99297
2003	6209130784.4533
2004	6336519590.3123
2005	7052187038.95838
2006	7551722918.11333
2007	6772509998.36516
2008	7194060953.97797
2009	8112405424.08061
2010	9051203669.86555
2011	8962675606.46803
2012	8645792373.55653
2013	8358824039.99842
2014	8833669392.17509
2015	8853192800.17416
2016	8888608319.53786
2017	9314311543.33567
2018	10048443319.5069