Year	constant 2010 US$
1970	11319688.1395823
1971	11749136.2469822
1972	10693717.3023947
1973	12349604.1345027
1974	13076098.3169544
1975	11986550.4250183
1976	13802592.4994062
1977	13076098.3169544
1978	13439538.7899218
1979	18161170.8306336
1980	21198037.6991733
1981	22554229.7123761
1982	36203804.5137796
1983	42500993.7831903
1984	46427791.7060144
1985	43003212.0259225
1986	50149253.3796805
1987	52043023.1940464
1988	64823880.3322029
1989	70406272.0844963
1990	77015122.4005742
1991	77001116.8744473
1992	86947724.3287356
1993	100000722.31766
1994	103692039.879863
1995	109325496.132018
1996	111929363.701177
1997	130827225.206087
1998	132058047.25027
1999	131822660.650493
2000	155997968.481507
2001	198657570.453045
2002	258527537.972729
2003	292810112.464849
2004	310025142.615002
2005	271800534.062848
2006	297878823.711187
2007	304411036.257102
2008	298089691.850162
2009	287558485.531262
2010	298983185.816533
2011	289999771.796294
2012	279553676.883866
2013	272564520.86294
2014	249645245.023137
2015	280199677.381431
2016	333021126.545601
2017	311940020.339456