Year current US$ 1965 9999.99977648258 1967 39999.9991059303 1968 90000.0035762787 1969 129999.995231628 1970 100000.00149011599 1971 90000.0035762787 1972 19999.9995529652 1973 109999.999403954 1974 90000.0035762787 1975 319999.99284744303 1976 300000.011920929 1977 3829999.92370605 1978 5170000.07629395 1979 7920000.07629395 1980 11390000.3433228 1981 8069999.694824221 1982 14689999.5803833 1983 11699999.8092651 1984 11880000.1144409 1985 10310000.4196167 1986 12220000.2670288 1987 15619999.8855591 1988 16430000.3051758 1989 13250000 1990 22540000.915527303 1991 13149999.6185303 1992 13720000.2670288 1993 12119999.8855591 1994 14960000.038146999 1995 14239999.7711182 1996 31739999.7711182 1997 15939999.5803833 1998 13210000.038146999 1999 14020000.4577637 2000 14560000.4196167 2001 15199999.8092651 2002 21459999.084472697 2003 28139999.3896484 2004 30329999.9237061 2005 66410003.662109405 2006 37290000.9155273 2007 44040000.9155273 2008 30559999.4659424 2009 35259998.3215332 2010 28959999.084472697 2011 25790000.915527303 2012 19879999.1607666 2013 14720000.2670288 2014 10359999.6566772 2015 5280000.20980835 2016 8090000.152587891 2017 8430000.30517578 2018 6800000.19073486 2019 8359999.65667725 2020 6300000.19073486 2021 6949999.80926514 2022 7050000.19073486