Year current US$ 1969 4209999.94874001 1970 5640000.00059605 1971 3879999.98033047 1972 4570000.08225441 1973 7250000.02980232 1974 5369999.98986721 1975 5490000.03933907 1976 6100000.00149012 1977 7640000.04716218 1978 10740000.1771748 1979 10169999.7112155 1980 2399999.9929219503 1981 15729999.9967217 1982 15199999.988079099 1983 20249999.5678663 1984 17189999.9603629 1985 23799999.4754791 1986 20380000.4124641 1987 15849999.9940395 1988 12130000.1144409 1989 29089999.6757507 1990 15770000.0405312 1991 21329999.9237061 1992 16960000.038147002 1993 24280000.2992153 1994 23959999.8295307 1995 58989999.294281 1996 24920000.2253056 1997 38839999.7353554 1998 25470000.5352497 1999 54959999.7401237 2000 47180000.4839897 2001 25530000.0309944 2002 49569999.1583824 2003 60719998.3596802 2004 55269999.7723103 2005 64409999.191761 2006 52659999.605268195 2007 58410001.4939904 2008 71859998.9488721 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