Year	constant 2010 US$
1970	33879588575.3986
1971	38096397308.935
1972	39246458752.5185
1973	36341196904.0098
1974	31695996921.3043
1975	24954534926.7184
1976	26834705497.7231
1977	30276529162.96
1978	32458429121.0258
1979	35400083147.3518
1980	37457660238.3558
1981	39807683247.1665
1982	33959131568.024
1983	31955736262.3185
1984	30719107954.5649
1985	30203481302.522
1986	32872749380.2039
1987	36382169641.5535
1988	40064288040.0874
1989	43425472117.9795
1990	45372450098.5227
1991	50053873047.5507
1992	56710911618.4791
1993	60901570295.2693
1994	66199605025.0698
1995	75580402207.9866
1996	80635912156.8291
1997	86634316695.5584
1998	91680272143.9328
1999	90262058224.5086
2000	94041212689.6528
2001	98466844843.12
2002	101018917752.96
2003	103471411360.578
2004	110177295482.897
2005	119053216329.131
2006	123151768774.023
2007	132142607434.506
2008	135308937648.93
2009	141128121819.968
2010	156061122446.358
2011	167875086754.703
2012	179080994545.36
2013	185917172624.403
2014	190790824086.475
2015	197339412995.216
2016	202139056143.471
2017	202372077235.788