Year	constant 2010 US$
1970	9322873136.82321
1971	10154560042.8082
1972	10948442841.9982
1973	12718087545.2423
1974	11240793382.7419
1975	10835031051.3832
1976	12303924389.5575
1977	12802936400.706
1978	15219868790.2157
1979	17291524915.9573
1980	16475799841.0768
1981	18045923708.3721
1982	17430139444.4356
1983	15811710506.159
1984	15413929024.1314
1985	14224784857.7691
1986	13827423350.7365
1987	13670084903.9501
1988	14385732626.0837
1989	15843713236.5081
1990	17967090388.7887
1991	16712279933.46
1992	16707834502.7725
1993	15858531162.2098
1994	17735855149.6948
1995	20536432776.7981
1996	23909924505.0552
1997	27688970894.9163
1998	31410513953.5047
1999	35831520797.1409
2000	37641916186.7102
2001	39833427825.3739
2002	42046424542.4522
2003	45399663834.1362
2004	49829705636.5282
2005	58219786761.2415
2006	62418255861.1881
2007	62437597226.1777
2008	55206046858.7322
2009	45860908160.1623
2010	38967856049.445
2011	38542894993.6106
2012	45194722923.5425
2013	43322892516.2596
2014	51349867842.7321
2015	78499611769.8671
2016	118198612499.566
2017	110268271949.351
2018	86960683104.9762