Year	constant 2010 US$
1967	4452732331.41496
1968	4801172091.32708
1969	5171384070.97343
1970	5378583222.27063
1971	5688108033.92434
1972	5941228152.18058
1973	5876457027.21525
1974	6574529421.8631
1975	7493133320.27256
1976	7056455741.00025
1977	6971093726.09235
1978	10056808783.9261
1979	11006442771.7343
1980	9570474679.34798
1981	12056850961.1699
1982	13404957473.2929
1983	14433600370.6834
1984	15910101722.348
1985	17263212291.4847
1986	18761024483.5196
1987	18368463994.2385
1988	17096593718.5421
1989	16565530749.3431
1990	15207058878.8829
1991	14324618388.6517
1992	14054065619.6306
1993	12960750256.6054
1994	13157796121.7921
1995	13591768573.4384
1996	14176130977.6208
1997	14896828378.507
1998	15762683826.2797
1999	16475813496.3537
2000	16723011487.9495
2001	17308513071.8156
2002	18211037948.1799
2003	19507843155.864
2004	21091382161.1151
2005	21424184419.1076
2006	22487158593.4781
2007	23365949518.7455
2008	24345234377.2972
2009	25169391102.2016
2010	25879823789.7177
2011	26938845851.5297
2012	28017197964.7401
2013	29410702599.2872
2014	31494989218.1997
2015	33082565129.7788
2016	34514304956.6384
2017	35667555840.7626
2018	37077582416.3689