Year	including construction (constant 2010 US$)
1977	35205052.4466701
1978	35953438.7216325
1979	43148511.4800659
1980	51542906.0954326
1981	58230764.9383314
1982	46239654.74596
1983	45985053.1740658
1984	50426528.3946037
1985	59738540.5938721
1986	73472545.7051903
1987	90361592.3815594
1988	99183551.4957247
1989	110735549.586897
1990	105139018.603332
1991	109786182.075181
1992	107370367.281532
1993	100811935.537907
1994	105344625.713946
1995	107622672.144635
1996	119542155.1729
1997	128211910.566991
1998	137976638.318896
1999	148941052.633817
2000	158655857.504042
2001	129676243.920231
2002	137486719.329472
2003	149376180.29972
2004	152098493.401171
2005	181846210.449398
2006	246309163.448383
2007	266255212.374599
2008	267190465.675539
2009	248968443.039688
2010	186002962.962963
2011	161392989.459165
2012	165806744.455153
2013	174755324.908689
2014	182129562.305642
2015	188029430.526262
2016	209945453.872893
2017	239881433.994149
2018	256462561.119344