Year current US$ 1965 142666666.66666666 1966 140380952.3809524 1967 157714285.7142857 1968 131809523.8095238 1969 163428571.42857143 1970 356190476.1904762 1971 411728821.20871955 1972 553572439.1772501 1973 721306653.7633184 1974 1142018015.7064705 1975 1424924241.8592627 1976 1533438283.4820127 1977 1942191142.1911423 1978 2312030391.3535542 1979 3017010200.2155185 1980 3987404297.3573723 1981 4200654510.696552 1982 3858557916.4599867 1983 3567350799.3169966 1984 3659087603.1270556 1985 3207085474.3461924 1986 3363856987.5911336 1987 3472947957.068141 1988 4205855883.162121 1989 4814704404.516491 1990 6219545454.545455 1991 5925543478.260869 1992 7200545434.193432 1993 7006979980.91143 1994 7483930665.095487 1995 8800888230.940044 1996 8542152930.73408 1997 8586157257.204036 1998 9039408109.947529 1999 9160319500.937849 2000 9214092536.348667 2001 10312550175.052286 2002 10311289109.839893 2003 11779584588.709915 2004 13947699939.059002 2005 14625418037.000753 2006 16470689881.857967 2007 20617813288.714005 2008 26328377735.68306 2009 20848790061.283813 2010 24115551348.330307 2011 26011487992.11242 2012 26323059148.77597 2013 26321908980.228455 2014 26724314135.508858 2015 22362683999.23533 2016 21646548260.664524 2017 22805583971.398163 2018 24922974973.80866 2019 23627358334.6425 2020 19691340860.58745 2021 24439758995.18585 2022 29105059744.275177 2023 28174901026.746918