Year	constant 2010 US$
1970	37747834768.268
1971	39182778600.1968
1972	40108539994.8006
1973	43072435471.0563
1974	45424806400.9388
1975	46829225876.4542
1976	46754572283.7952
1977	47170278019.4321
1978	44412626455.1419
1979	45382333522.8169
1980	48597176687.5748
1981	52327682335.5634
1982	52868216100.49
1983	46032897789.9051
1984	47521148717.3049
1985	49756572693.8289
1986	54051872989.312
1987	60958185463.2204
1988	48019626604.2752
1989	44383179795.5804
1990	45202464465.6928
1991	48610066625.0517
1992	48655845634.2959
1993	50594733014.1277
1994	57889805559.4463
1995	62430197915.5898
1996	63900733184.1714
1997	67937313443.3102
1998	66946325740.3128
1999	65593555137.8507
2000	65985931466.0538
2001	66425926114.9915
2002	69971109027.7265
2003	72380747526.4436
2004	75037484764.3144
2005	78843841783.9861
2006	83614515975.3172
2007	93041208659.0765
2008	101922389241.882
2009	105292707281.108
2010	118317652474.078
2011	127840558195.274
2012	137440668494.42
2013	146011438580.667
2014	149698654195.856
2015	152630868543.903
2016	154610402399.516
2017	159079605756.062