Year	including construction (current US$)
1960	455711926.2990826
1961	380028533.4856973
1962	329349055.8777655
1963	404263899.62792176
1964	533269621.9489135
1965	568680397.9105992
1966	615152658.1232411
1967	628999290.6602262
1968	646656748.582571
1969	798596527.7367859
1970	786082533.5335625
1971	780994096.1720665
1972	861834818.8782427
1973	948904525.2676032
1974	1746335494.7019622
1975	1980838821.7956402
1976	2453094032.041348
1977	3078068394.7610908
1978	3229314841.8092265
1979	4067917532.4980664
1980	4792907802.83756
1981	6157632505.97036
1982	5898512387.43358
1983	4755900076.13647
1984	4993726995.230716
1985	5058160859.051486
1986	4159918601.0098844
1987	3792628669.1325145
1988	3799872138.754463
1989	4021983530.1109233
1990	4591564359.328118
1991	5171344672.336167
1992	5901417708.854427
1993	5413193596.798399
1994	6415214607.303652
1995	6631212606.303151
1996	6757943971.985992
1997	7286468234.117058
1998	7223893946.973486
1999	5653973986.993497
2000	6084947473.736868
2001	6582841000
2002	7570028000
2003	8529943999.999999
2004	10440137000
2005	12939368000
2006	15897346000
2007	17664010000
2008	23795568000
2009	18684503000
2010	23107509000
2011	29545509000
2012	32542465000
2013	35569069000
2014	36682574000
2015	27306206000
2016	26892817000
2017	29739813000
2018	30109962000
2019	28674784000
2020	22989628000
2021	29476305000
2022	34057102000
2023	31918313000