Year	US Dollars adjusted for inflation)
1970	36760726135.3807
1971	38036281978.0651
1972	40504763881.14669
1973	42417167236.99279
1974	44224235804.7704
1975	46725844079.9098
1976	47377579845.71169
1977	51267895239.86
1978	54952379842.62241
1979	56641086318.4948
1980	58385251876.49159
1981	60326687543.5162
1982	61704228307.4918
1983	61553484170.0732
1984	64233752271.55069
1985	66215758503.17461
1986	65932136184.4827
1987	69006611808.59261
1988	72606972545.83861
1989	76828283464.61278
1990	83332971545.84122
1991	84940997527.34108
1992	87780808050.3428
1993	90144402158.60989
1994	95332958005.08719
1995	104517737774.45599
1996	112679815123.306
1997	124274512335.60899
1998	134838094250.80501
1999	149155003954.673
2000	163414057103.26599
2001	172898016410.75998
2002	183806626260.13898
2003	189540490699.05798
2004	202204122281.259
2005	214349276918.52002
2006	226184930380.54095
2007	237966261911.27597
2008	228600078637.866
2009	218023275125.76498
2010	221951354761.53201
2011	228576397928.58801
2012	228661324925.09402
2013	232408729622.71298
2014	251764610171.92404
2015	316108768452.78699
2016	332361374827.62604
2017	358293477609.58502