Year	constant 2010 US$
1975	615927636.495023
1976	629370271.58721
1977	744245841.023526
1978	853010716.484432
1979	975218545.485281
1980	1175639372.30876
1981	1159752332.24731
1982	1160974534.73194
1983	1355284986.02777
1984	1333287570.43866
1985	1272183815.16211
1986	1220776157.13729
1987	1261034959.25096
1988	1020719952.99356
1989	1265990006.32259
1990	1387386430.44307
1991	1366947179.72038
1992	1571338731.60402
1993	1589658394.0678
1994	1865452301.63263
1995	1888932091.52241
1996	1740783508.37924
1997	1928576607.91621
1998	2107424828.45608
1999	2262739441.43554
2000	2415756453.8609
2001	2619214635.37391
2002	3125592104.2436
2003	3214056890.65086
2004	3757905151.53703
2005	4050124594.31744
2006	4505640861.51029
2007	4918708361.37666
2008	5170841600.72673
2009	5273415051.0387
2010	5379407616.36107
2011	5597091272.02314
2012	5728157347.42177
2013	5838708732.758
2014	5925326313.02144
2015	6005105663.26409
2016	6073487963.47207
2017	6136171738.66271
2018	6224042994.42997