Year current USD 1960 232839815.943989 1961 239348772.06864202 1962 308791693.470944 1963 316520311.132393 1964 386820000.721007 1965 439425746.03377104 1966 560943076.5348431 1967 545917155.931618 1968 668753624.8419329 1969 805713226.275707 1970 859146961.788224 1971 900614349.1850591 1972 1256164585.70101 1973 1521319434.52806 1974 1968178717.80746 1975 2108232940.99234 1976 2521013874.8305697 1977 2808847049.54659 1978 3470695273.0460997 1979 4910953932.41438 1980 5508356432.6108 1981 4977748533.42705 1982 4956242441.315411 1983 4770965313.3124 1984 4851949869.22903 1985 5077574144.5611 1986 6270618789.41391 1987 7921508650.89204 1988 8900414226.53907 1989 9302930295.84069 1990 11695038644.5437 1991 11680263754.141201 1992 12250195429.6283 1993 10041511353.1917 1994 10092671257.377901 1995 11439906271.183699 1996 11294316854.7562 1997 9865892241.046228 1998 10333417234.2975 1999 11113722490.4035 2000 10273779251.8887 2001 10222074075.3998 2002 10270839019.3403 2003 12880532801.2243 2004 15262458636.7672 2005 15997724220.2656 2006 17252217612.693398 2007 20065668634.8096 2008 22227721829.5675 2009 20178274984.962 2010 19710785449.873802 2011 19695435494.296997 2012 18860623363.4077 2013 17242959322.0024 2014 17178549314.761902 2015 15187168681.3796 2016 14014439635.1839 2017 16043533257.4617 2018 17823271130.6257 2019 17189319301.388298 2020 17431779322.9226 2021 19544465468.3065 2022 20306570632.8304