Year	constant 2010 US$
1990	33384147411.5155
1991	33450914731.5852
1992	19067021484.6965
1993	15139215935.7776
1994	13413343965.2479
1995	9201554388.05899
1996	10195321569.3014
1997	12897081837.4651
1998	12652038721.5614
1999	12626733943.2093
2000	14318716638.3559
2001	16148202793.9015
2002	17796119298.827
2003	20180886572.8632
2004	24086012106.9373
2005	23821012420.5769
2006	28963553090.0971
2007	31085368464.5256
2008	36214525830.1677
2009	32910827933.0047
2010	36934306814.3672
2011	43767154822.7995
2012	48537792610.438
2013	46499207268.6376
2014	47432458769.6621
2015	42388646947.6455
2016	41795156465.415
2017	46453443429.1779
2018	49677371041.1593