Year current US$ 1969 2009999.9569356402 1970 3149999.9593943404 1971 2510000.0146776396 1972 2299999.9932944803 1973 2460000.00834465 1974 3120000.04388392 1975 2419999.9570846604 1976 2989999.99277294 1977 3659999.96848404 1978 4950000.0346452 1979 3950000.02533197 1980 1279999.99932945 1981 5999999.94039536 1982 5509999.99977648 1983 7099999.97168779 1984 6529999.96393919 1985 7309999.97071922 1986 6930000.0499934 1987 9300000.0603497 1988 6409999.9628961105 1989 9190000.12986362 1990 12009999.923408 1991 14639999.9707937 1992 14089999.908581398 1993 15989999.95552 1994 15120000.0345707 1995 24500000.1043081 1996 14830000.1733005 1997 18789999.999105897 1998 17090000.0464171 1999 19540000.0009686 2000 17399999.9761581 2001 15579999.9628216 2002 15090000.005438901 2003 17940000.141039502 2004 13380000.0026822 2005 8769999.9846518 2006 7409999.97407198 2007 8570000.00216067 2008 4279999.96393919 2009 0 2010 0 2011 0 2012 0 2013 0 2014 0 2015 0 2016 0 2017 0 2018 0 2019 0 2020 0 2021 0