Year	constant 2010 US$
1975	3923578369.40992
1976	4976861630.01852
1977	6244616595.9791
1978	6674553626.3155
1979	7396752955.06685
1980	7761063022.98303
1981	7416503075.71014
1982	7900656673.94258
1983	8305320671.31859
1984	9297454891.35653
1985	9508005637.39904
1986	9050189055.75126
1987	9935932696.67323
1988	11246523789.2539
1989	12640565949.4032
1990	13038410376.6466
1991	13166568577.7772
1992	15163984938.1015
1993	12754948860.789
1994	13617744304.0615
1995	14995567191.7166
1996	15129104374.3477
1997	15676137359.7312
1998	16115211546.1311
1999	16985144558.3454
2000	18010137271.3223
2001	18545382985.4425
2002	19624189729.7271
2003	20448361855.172
2004	21975578894.749
2005	22779300331.8616
2006	24278477659.4062
2007	26083669162.8977
2008	28921096882.17
2009	26572437895.7971
2010	27419483443.7086
2011	26319207675.4059
2012	25258308628.0707
2013	22933026402.5789
2014	22507967347.057
2015	23376496034.2568
2016	24788785832.7038
2017	26890094269.2699
2018	27699471788.3939