Year current US$ 1960 26857142.85714286 1961 34000000 1962 33428571.42857143 1963 39428571.428571425 1964 47714285.71428572 1965 68571428.57142857 1966 98714285.71428572 1967 123142857.14285715 1968 156285714.2857143 1969 160428571.42857143 1970 184571428.57142857 1971 213857142.85714287 1972 254061624.64985994 1973 299539877.30061346 1974 373872472.7838258 1975 388802488.33592534 1976 393723252.4964337 1977 446835443.03797466 1978 536953807.7403246 1979 613745271.1223203 1980 658048162.2306718 1981 710689655.1724138 1982 719806243.2723358 1983 659094519.4598888 1984 557418643.1329288 1985 514808917.19745225 1986 377028762.19825375 1987 582729278.2855343 1988 1148753931.7686908 1989 1237128999.565658 1990 1046568115.9420289 1991 1126021039.6039603 1992 1056131843.5754191 1993 817593310.4074316 1994 332357093.45041835 1995 349389493.8081445 1996 392658746.5849822 1997 464537564.91071117 1998 381145650.34915465 1999 347625500.4671236 2000 340378431.06243837 2001 371851722.61477983 2002 402017439.6597095 2003 497448445.27177924 2004 626169611.0486255 2005 819894432.6201411 2006 1200154949.9042492 2007 1220116452.217364 2008 1514178284.4328163 2009 1331255464.6162384 2010 1535781638.9068394 2011 1763254592.9598618 2012 1804548928.56449 2013 1688888874.4789255 2014 1851013290.0081234 2015 1598582684.3739858 2016 1610889833.9605074 2017 2102809214.6046755 2018 1801750575.3546 2019 1582409162.1411946 2020 1397302712.104654 2021 1915386968.9101977 2022 2332038938.786158 2023 2337653415.823562