Year	constant 2010 US$
1970	9920737213.19028
1971	10637959895.1472
1972	11171071774.4248
1973	14648944199.5874
1974	18024645242.8658
1975	12164460588.3461
1976	12766361106.5052
1977	11308649052.1879
1978	9631420299.31241
1979	10872650528.495
1980	10048198510.4088
1981	12122985089.7295
1982	13019260548.0662
1983	13731425203.7235
1984	15498686133.0079
1985	14858344845.5463
1986	14525529280.1758
1987	13880182134.0434
1988	13766045342.7067
1989	15761644559.8174
1990	14482451068.0675
1991	12074810878.4756
1992	13068303451.2167
1993	15634586625.0107
1994	17763704276.6083
1995	19451349550.3321
1996	20047875793.9554
1997	21344297428.9622
1998	19242457682.8637
1999	23352817789.5428
2000	21907085123.2966
2001	23690203282.4316
2002	25374259293.5934
2003	28972798398.4838
2004	31607276480.135
2005	32862063375.5588
2006	31113401574.9922
2007	34696866036.5191
2008	31709927818.6156
2009	27411493250.2871
2010	29437241826.1793
2011	31794633132.5049
2012	32847706541.4749
2013	35490798694.7546
2014	38456919506.8393
2015	39351350003.6619
2016	41018177799.5121
2017	42388537104.8317