Year	including construction (current US$)
1975	2851551.250163634
1976	2772088.4761090064
1977	3365380.3504102905
1978	4965548.815382854
1979	5873351.218421642
1980	6677636.073787292
1981	6969662.146632958
1982	6613246.7795922505
1983	8180180.18018018
1984	9008336.989907855
1985	7545918.01103429
1986	8407085.561497327
1987	8843999.439854363
1988	11530376.826454757
1989	13504966.22963846
1990	13296805.062509647
1991	13208391.176924264
1992	14976616.43530547
1993	13923410.404624278
1994	34787910.922587484
1995	39089936.26563852
1996	41978244.98741781
1997	35921487.930352196
1998	31405630.02680965
1999	34082010.58033912
2000	37089662.73749946
2001	33358062.576225083
2002	32327427.420860603
2003	34520091.969770946
2004	38181788.852047436
2005	43613198.46975759
2006	44780901.08566336
2007	46872119.46475348
2008	53426847.00192976
2009	52392004.97866902
2010	66169364.433645196
2011	79471271.90911636
2012	88968996.98630977
2013	71524703.63767344
2014	70842876.8888239
2015	67702049.39082317
2016	66988101.76072296
2017	75268884.33189793
2018	74949949.49366027
2019	77115899.42946886
2020	71633103.86741622
2021	74713937.96520063