Year	constant 2010 US$
1970	29894515987.0734
1971	29867844934.5003
1972	31980014491.2719
1973	34817103256.98
1974	32475918262.1142
1975	27200384063.157
1976	33050768348.5729
1977	32606428612.7052
1978	32123504754.1151
1979	33519823259.8249
1980	28488951516.4716
1981	23809070824.9801
1982	26570769415.415
1983	27496610553.7355
1984	32577801682.9434
1985	36264630183.6302
1986	42012597627.1653
1987	40534665700.5818
1988	39256411054.2622
1989	40682245524.8196
1990	40463898507.7546
1991	38882838511.2218
1992	39624827193.8052
1993	36554455621.5911
1994	41489489382.6985
1995	47579379720.2206
1996	48080795508.5947
1997	55008334703.9291
1998	58242110924.9076
1999	55400932597.805
2000	61907246969.5016
2001	60994919164.4848
2002	60261998639.7763
2003	59852153465.2365
2004	63898507754.6085
2005	67433311255.6287
2006	76041837991.1363
2007	78073816583.1714
2008	74328667380.8582
2009	58547761187.3953
2010	58204060223.2367
2011	61378626707.503
2012	62787213897.3965
2013	64916097313.7805
2014	67700910816.4454
2015	71248160808.6663
2016	75686401763.8456
2017	78696318950.2274
2018	84558616305.7925