Year	constant 2010 US$
1968	668883389.892526
1969	782947155.124897
1970	1019179246.69558
1971	1073823958.67981
1972	1115062186.34043
1973	1210980561.62667
1974	1211308341.30947
1975	1180892749.12154
1976	1267414773.50079
1977	1289857346.37732
1978	1348621451.67244
1979	1363386302.2491
1980	1429828129.84409
1981	1508377134.91194
1982	1577771932.62226
1983	1626495939.52525
1984	1626791236.53678
1985	1568913022.27626
1986	1560644705.95333
1987	1605825148.71792
1988	1584563763.88752
1989	1620294702.28305
1990	1481209809.85088
1991	1544108073.67702
1992	1761582459.98705
1993	1793711558.64546
1994	1692188962.99597
1995	1840943087.62495
1996	1907452487.24008
1997	1906383095.96233
1998	1984092560.67441
1999	1940425062.94346
2000	1967277316.83473
2001	2209533211.03631
2002	2264007279.45867
2003	2443098798.02317
2004	2332206601.37125
2005	2505901406.62421
2006	2708333009.59145
2007	2827265863.04262
2008	2752120742.05489
2009	3032670085.6345
2010	3269990568.24616
2011	3501140858.99163
2012	3605679555.3797
2013	3707212469.79269
2014	3809506069.99438
2015	3829751876.9676
2016	4157966602.02745
2017	4399243234.855
2018	4675969045.56231