Year	including construction (current US$)
1977	7755061.481481481
1978	9287406.296296295
1979	11450353.333333332
1980	11312015.185185185
1981	13526671.11111111
1982	17211904.074074075
1983	17161420.37037037
1984	18180518.888888888
1985	21548918.148148146
1986	25074194.814814813
1987	30476727.037037034
1988	34080108.88888889
1989	35933000
1990	36991545.18518518
1991	46087407.4074074
1992	47373111.111111104
1993	46121000
1994	50257074.07407407
1995	54235592.59259259
1996	57078851.85185185
1997	63417592.59259259
1998	74239037.03703703
1999	83707666.66666666
2000	93137444.44444443
2001	85935000
2002	89788629.62962963
2003	100524629.62962963
2004	100123703.7037037
2005	158919481.48148146
2006	135706185.18518516
2007	142773185.18518516
2008	145000000
2009	113577037.03703703
2010	113411111.1111111
2011	103896296.29629628
2012	98529629.62962961
2013	112892592.59259258
2014	116766666.66666666
2015	122874074.07407406
2016	129044444.44444443
2017	143140740.74074072
2018	156700000
2019	165540740.74074072
2020	136625925.9259259
2021	163344444.44444445
2022	198129629.62962964
2023	196896296.29629627