Year US Dollars adjusted for inflation) 1970 1132760927.15232 1971 1160558807.94702 1972 1228316026.49007 1973 1279243708.60927 1974 1407633774.83444 1975 1682968079.4702 1976 1969360264.90066 1977 2209310463.57616 1978 2455895099.33775 1979 2713537483.44371 1980 2904834039.7351 1981 3001035231.78808 1982 3069592450.33113 1983 3050794569.53642 1984 3079544370.86093 1985 3159159205.29801 1986 3281898543.04636 1987 3416801456.95364 1988 3704299205.29801 1989 4007277748.34437 1990 4259391258.27815 1991 4525879735.09934 1992 4738185695.36424 1993 4950491920.5298 1994 5230249403.97351 1995 5561977615.89404 1996 5772072185.43046 1997 6075508874.17219 1998 6386915231.78808 1999 6688376026.49007 2000 7141192052.98013 2001 7184635761.5894 2002 7398940397.35099 2003 7587152317.88079 2004 7620794701.98675 2005 7909139072.84768 2006 8053774834.43709 2007 8374834437.08609 2008 8655099337.74834 2009 8441986754.96689 2010 8741059602.64901 2011 8856688741.72186 2012 9096953642.38411 2013 9516423841.0596 2014 10288609271.5232 2015 11278543046.3576 2016 11868476821.1921 2017 12630728476.8212