Year	constant 2010 US$
1975	814531039.099988
1976	944593126.485082
1977	955103160.834655
1978	945906861.14501
1979	987290445.353623
1980	1071370877.22035
1981	1150853394.84747
1982	1196178025.96573
1983	1270405604.95313
1984	1319014572.72121
1985	1369594456.61947
1986	1418860291.71751
1987	1815615698.38286
1988	1969982505.25721
1989	2031072423.50505
1990	2380532439.99209
1991	2450161589.40397
1992	2790425298.01325
1993	2388414966.88742
1994	2494172582.78146
1995	2253642384.10596
1996	2416317880.7947
1997	2682490066.22517
1998	3076900662.25166
1999	3185907284.76821
2000	3084543046.35762
2001	3320370860.92715
2002	3486357615.89404
2003	3758754966.88742
2004	3691907284.76821
2005	3777854304.63576
2006	4048860927.15232
2007	4185576158.9404
2008	4451602649.00662
2009	4730344370.86093
2010	4713907284.76821
2011	4784834437.08609
2012	4666172185.43046
2013	4444225165.56291
2014	4111907284.76821
2015	4091139072.84768
2016	4058026490.06622
2017	4181894039.7351
2018	4362781456.95364