Year	constant 2010 US$
1980	22873679530.039
1981	25483538122.207
1982	26734614353.1671
1983	27817587059.5333
1984	29308355054.4877
1985	29236423021.8236
1986	29339137197.1216
1987	31277018338.5226
1988	32684705290.1363
1989	30836731520.5312
1990	29950616931.9779
1991	24585829555.6814
1992	24265948510.6325
1993	22817160940.7797
1994	23994041960.5831
1995	17858004640.4067
1996	20459128538.8643
1997	24109505549.3455
1998	25537978345.759
1999	22859313814.5617
2000	24795429649.0802
2001	26672606477.1831
2002	28881712284.3251
2003	30236060455.442
2004	32445830592.5262
2005	34073974395.5206
2006	35715974292.5068
2007	37113481674.2401
2008	41471547226.2065
2009	41436092728.0036
2010	41269973391.4928
2011	42801159157.2936
2012	43415929726.7771
2013	43310888427.5015
2014	44619019275.804
2015	46209270345.6853
2016	50128230613.7936
2017	53109673869.6249