Year current US$ 1964 9999.99977648258 1965 109999.999403954 1966 419999.986886978 1967 439999.997615814 1968 600000.023841858 1969 550000.011920929 1970 560000.002384186 1971 1389999.98569489 1972 1700000.04768372 1973 2589999.91416931 1974 3910000.08583069 1975 6320000.17166138 1976 6000000 1977 11539999.961853001 1978 15939999.5803833 1979 3470000.02861023 1980 15960000.038146999 1981 6139999.8664856 1982 16989999.7711182 1983 10829999.923706101 1984 18829999.9237061 1985 10909999.8474121 1986 13350000.3814697 1987 25659999.8474121 1988 30389999.3896484 1989 15899999.6185303 1990 13949999.8092651 1991 23229999.5422363 1992 25959999.084472697 1993 13579999.923706101 1994 10130000.1144409 1995 18739999.7711182 1996 9529999.73297119 1997 11760000.2288818 1998 7829999.92370605 1999 9319999.69482422 2000 8409999.84741211 2001 8939999.5803833 2002 12210000.038146999 2003 17530000.6866455 2004 24979999.5422363 2005 49700000.762939505 2006 10619999.8855591 2007 23829999.9237061 2008 14250000 2009 12949999.8092651 2010 8689999.5803833 2011 7530000.20980835 2012 6349999.90463257 2013 5690000.05722046 2014 7840000.15258789 2015 2799999.95231628 2016 1309999.9427795399 2017 1929999.94754791 2018 4250000 2019 3980000.01907349 2020 5050000.19073486 2021 8000000 2022 17739999.7711182