Year	constant 2010 US$
1960	473592274.345539
1961	541364308.326563
1962	486232104.530247
1963	491382024.455701
1964	617390888.004706
1965	634392961.877472
1966	749041317.083685
1967	584135015.635824
1968	752659323.45672
1969	868855893.765631
1970	1032231343.73544
1971	1231145010.22326
1972	1394513660.41527
1973	1634667121.80222
1974	1475429433.27065
1975	1357413326.19265
1976	1124219273.35668
1977	1587513741.20721
1978	1208655366.76166
1979	1225991780.99998
1980	1548495395.50326
1981	1607993940.77077
1982	1341054131.34232
1983	1735764269.99373
1984	2579186963.43059
1985	2789556971.50734
1986	2737541657.77839
1987	3374885826.9288
1988	3847505647.90473
1989	3851580146.91549
1990	2907698509.48754
1991	2708057271.61687
1992	1671824768.49541
1993	1085124309.39795
1994	810787478.847503
1995	1107535633.7524
1996	1046621286.45492
1997	807061283.736275
1998	1346652621.52477
1999	2146736343.38955
2000	2432037317.09694
2001	1873156997.83707
2002	2641466115.43332
2003	5555714249.509
2004	5439902948.69486
2005	6719969291.83051
2006	5930563551.87237
2007	7713529190.78227
2008	7180469322.52083
2009	7180469322.52083
2010	10704459171.1791
2011	13869099191.0255
2012	17622802353.9432
2013	19035638524.2242
2014	20684175569.2528
2015	19345887174.4968
2016	18627983169.2224
2017	20442951882.3638
2018	21412189109.37