Year current US$ 1965 890000.034123659 1966 680000.014603138 1967 909999.998286366 1968 1400000.01341105 1969 1600000.0014901198 1970 949999.978765845 1971 1119999.99172986 1972 1509999.98673797 1973 1399999.96311963 1974 1480000.01162291 1975 1989999.98345971 1976 2359999.9435246 1977 2439999.90448356 1978 2329999.9590963097 1979 1860000.0031292401 1980 2830000.00938773 1981 3129999.94680285 1982 3329999.9255687 1983 3370000.08299947 1984 11039999.7290224 1985 19440000.6122887 1986 14499999.9795109 1987 12899999.8290092 1988 12759999.9327213 1989 9319999.98353422 1990 10350000.1095235 1991 11540000.0698864 1992 9319999.98725951 1993 5599999.953061339 1994 5749999.89010394 1995 5220000.023022289 1996 6959999.91334975 1997 4460000.05491078 1998 3349999.94374812 1999 5309999.95023012 2000 3510000.0221282197 2001 8740000.03375113 2002 15229999.870061899 2003 18210000.252351202 2004 18589999.6869266 2005 7550000.2335757 2006 17059999.6913224 2007 22569999.3763119 2008 26930000.2269447 2009 18579999.4636327 2010 30539999.8370558 2011 38530001.8563867 2012 27109999.1723895 2013 28550000.723451402 2014 17569999.631494302 2015 25840000.3127754 2016 15080000.001937201 2017 23630000.3528595 2018 23450000.9194016 2019 17930000.150576197 2020 13499999.8081475 2021 20370000.9137392 2022 20310000.915080268