Year	including construction (constant 2010 US$)
1968	164238735489.662
1969	190926437928.192
1970	212737009196.799
1971	243054851378.612
1972	272076734836.076
1973	304590670663.11
1974	309016034485.116
1975	286647637955.997
1976	338213738690.18
1977	315199924067.899
1978	260791260615.577
1979	225173431849.891
1980	147171767450.142
1981	145151141452.502
1982	207995598435.443
1983	215575504204.026
1984	192764789740.509
1985	196379041008.651
1986	191881734076.753
1987	211265818144.608
1988	210258902717.71
1989	217229259673.192
1990	285149136402.887
1991	258952643546.637
1992	270373781405.928
1993	278164763285.319
1994	278535338035.563
1995	286244780024.507
1996	300821955469.465
1997	325682710445.762
1998	358841532797.784
1999	378146630776.069
2000	400776298448.134
2001	404591525659.115
2002	413396586504.279
2003	410003838881.262
2004	440729337572.674
2005	453812195142.089
2006	474889629248.832
2007	500360224356.15
2008	524088160551.785
2009	526667451709.226
2010	555225159089.846
2011	566415855257.392
2012	540900936522.116
2013	540199636273.018
2014	559688396796.735
2015	566399749316.88
2016	642642788940.188
2017	649921528154.625