Year current US$ 1969 9999.99977648258 1970 39999.9991059303 1971 19999.9995529652 1973 230000.004172325 1974 5059999.94277954 1975 5630000.11444092 1976 7019999.98092651 1977 5139999.8664856 1978 9050000.19073486 1979 9140000.34332275 1980 12800000.1907349 1981 8829999.92370605 1982 7420000.07629395 1983 8010000.22888184 1984 7780000.20980835 1985 11060000.4196167 1986 11699999.8092651 1987 17000000 1988 18030000.6866455 1989 18739999.7711182 1990 21760000.2288818 1991 26899999.6185303 1992 25780000.6866455 1993 11350000.3814697 1994 7659999.84741211 1995 6909999.84741211 1996 6570000.17166138 1997 7300000.19073486 1998 4219999.79019165 1999 2730000.01907349 2000 2670000.07629395 2001 3630000.1144409203 2002 3170000.07629395 2003 1480000.01907349 2004 1639999.98569489 2005 2170000.07629395 2006 1960000.03814697 2007 2200000.04768372 2008 3009999.99046326 2009 1830000.04291534 2010 629999.995231628 2011 500000 2012 460000.00834465 2013 180000.00715255702 2014 140000.000596046 2015 70000.0002980232 2016 200000.00298023198 2019 0 2020 39999.9991059303 2021 50000.0007450581 2022 50000.0007450581