Year current US$ 1966 319999.99284744303 1967 409999.99642372096 1968 519999.980926514 1969 219999.998807907 1970 250000 1971 379999.99523162795 1972 509999.99046325695 1973 1450000.04768372 1974 1580000.04291534 1975 2539999.96185303 1976 8640000.34332275 1977 3319999.9332428 1978 2779999.97138977 1979 3490000.00953674 1980 1139999.98569489 1981 379999.99523162795 1982 330000.013113022 1983 660000.026226044 1984 649999.976158142 1985 810000.002384186 1986 1049999.95231628 1987 3109999.89509583 1988 2099999.90463257 1989 1909999.9666214 1990 2309999.94277954 1991 2349999.90463257 1992 2579999.92370605 1993 1940000.0572204601 1994 2970000.02861023 1995 1769999.98092651 1996 2740000.00953674 1997 13140000.3433228 1998 3759999.99046326 1999 11630000.1144409 2000 910000.026226044 2001 980000.019073486 2002 620000.004768372 2003 409999.99642372096 2004 -14770000.4577637 2005 310000.002384186 2006 -1970000.02861023 2007 -1330000.04291534 2008 -550000.011920929 2009 -159999.99642372102 2010 -29999.999329447703 2011 219999.998807907 2012 540000.021457672 2013 680000.007152557 2014 400000.00596046395 2015 479999.989271164 2016 119999.997317791 2017 370000.00476837205 2018 540000.021457672 2019 1360000.01430511 2020 1629999.99523163 2021 1450000.04768372 2022 1120000.00476837