Year US Dollars adjusted for inflation) 1960 79031575209.63637 1961 82070142853.24081 1962 87140340334.87202 1963 93565731610.71808 1964 100994646417.74301 1965 107178307066.18201 1966 111935210729.01599 1967 119990713173.63599 1968 124974461227.50002 1969 130868045123.05 1970 137736882357.76099 1971 143630602824.28802 1972 146007347518.50497 1973 152682800251.29099 1974 162013329327.25101 1975 164760181366.25598 1976 168467127366.09201 1977 168308705034.00601 1978 173382453361.01199 1979 179954521865.013 1980 191868564092.759 1981 202154134003.44199 1982 201379093715.004 1983 197660539182.21298 1984 207739477206.30399 1985 205222747261.75204 1986 205259348283.30304 1987 209571303706.53598 1988 218373576247.57599 1989 223603152058.12503 1990 222892573270.32898 1991 220623036792.22095 1992 215908196989.97595 1993 218571467591.707 1994 225640381306.16501 1995 232670508863.45602 1996 242690994509.84698 1997 249114610363.00598 1998 250403430662.91602 1999 256308213378.49298 2000 266956652372.23801 2001 274259239026.52203 2002 284318510830.078 2003 292703285897.68097 2004 306034661713.69293 2005 322184452760.09888 2006 340238589494.96094 2007 358476960476.35999 2008 369916145420.77502 2009 364226461992.29706 2010 375298134440.46887 2011 387623544617.73798 2012 396203024500.83301 2013 406049405943.56897 2014 413549172748.62799 2015 418840692619.70496 2016 421208662669.69006 2017 426768874668.81506