Year current US$ 1965 9560000.4196167 1966 10949999.8092651 1967 21879999.1607666 1968 4599999.90463257 1969 4949999.80926514 1970 3650000.09536743 1971 5619999.88555908 1972 310000.002384186 1973 1960000.03814697 1974 7130000.11444092 1975 13960000.038146999 1976 6590000.15258789 1977 8510000.22888184 1978 2500000 1979 4869999.88555908 1980 3160000.08583069 1981 2730000.01907349 1982 2180000.0667572 1983 1789999.96185303 1984 2190000.05722046 1985 2589999.91416931 1986 1759999.9904632599 1987 1470000.02861023 1988 2420000.07629395 1989 9369999.88555908 1990 20239999.7711182 1991 16000000 1992 17409999.8474121 1993 12270000.4577637 1994 9369999.88555908 1995 14500000 1996 15659999.8474121 1997 14279999.7329712 1998 11229999.5422363 1999 10119999.8855591 2000 10409999.8474121 2001 11239999.7711182 2002 7550000.19073486 2003 7980000.01907349 2004 12220000.2670288 2005 12779999.7329712 2006 980000.019073486 2007 5780000.20980835 2008 8270000.45776367 2009 9579999.92370605 2010 16450000.7629395 2011 24329999.9237061 2012 27770000.4577637 2013 18680000.3051758 2014 12319999.6948242 2015 4170000.07629395 2016 4659999.84741211 2017 6199999.80926514 2018 6599999.90463257 2019 6699999.80926514 2020 2289999.96185303 2021 20389999.3896484 2022 6800000.19073486