Year	constant 2010 US$
1977	97170143.3203228
1978	107403309.373273
1979	97913690.2860661
1980	116996913.539642
1981	119643065.798187
1982	123283422.502761
1983	126837058.670577
1984	129458303.623689
1985	134742177.814146
1986	140414161.570014
1987	148715780.580577
1988	156718689.410765
1989	163520438.00882
1990	171948878.208728
1991	179119698.194506
1992	182721588.804835
1993	187011061.25407
1994	195131577.830592
1995	202986514.05198
1996	208000480.330412
1997	213104684.90275
1998	222510571.585952
1999	229518149.204317
2000	232482913.795989
2001	236323701.394976
2002	236478020.197769
2003	251109156.90669
2004	253085100.623668
2005	248752813.500041
2006	259400244.881951
2007	273916360.109619
2008	289405124.474723
2009	292249611.770532
2010	297745289.62963
2011	298188682.966158
2012	293805566.940305
2013	293838179.714677
2014	308476976.975539
2015	304910817.010096
2016	306452933.660432
2017	283187182.464702
2018	263490233.696282