Year current US$ 1964 9999.99977648258 1967 219999.998807907 1971 -9999.99977648258 1976 29999.999329447703 1977 9999.99977648258 1978 250000 1979 39999.9991059303 1980 59999.9986588955 1981 119999.997317791 1982 29999.999329447703 1983 29999.999329447703 1984 50000.0007450581 1985 39999.9991059303 1986 70000.0002980232 1987 119999.997317791 1988 7670000.07629395 1989 4829999.92370605 1990 7769999.98092651 1991 1980000.01907349 1992 5119999.88555908 1993 7159999.84741211 1994 21729999.5422363 1995 17430000.3051758 1996 15159999.8474121 1997 11100000.3814697 1998 12779999.7329712 1999 4619999.88555908 2000 4519999.98092651 2001 1830000.04291534 2002 5380000.11444092 2003 5420000.07629395 2004 8130000.11444092 2005 8420000.07629395 2006 10300000.1907349 2007 10260000.2288818 2008 14229999.5422363 2009 11189999.5803833 2010 13069999.6948242 2011 13069999.6948242 2012 8189999.580383301 2013 17430000.3051758 2014 10850000.3814697 2015 9560000.4196167 2016 10649999.6185303 2017 13159999.8474121 2018 6989999.771118159 2019 13760000.2288818 2020 11409999.8474121 2021 15109999.6566772 2022 12140000.3433228