Year current US$ 1973 109999.999403954 1974 50000.0007450581 1975 959999.978542328 1976 500000 1977 540000.021457672 1978 730000.019073486 1979 1259999.9904632599 1980 2630000.1144409203 1981 920000.016689301 1982 1279999.97138977 1983 3670000.07629395 1984 2700000.04768372 1985 5869999.88555908 1986 1539999.96185303 1987 1820000.05245209 1988 1570000.05245209 1989 1000000 1990 1950000.04768372 1991 3170000.07629395 1992 7300000.19073486 1993 53939998.626709 1994 47740001.6784668 1995 150710006.71386698 1996 80720001.2207031 1997 -69800003.0517578 1998 4599999.90463257 1999 33950000.762939505 2000 19979999.5422363 2001 4360000.1335144 2002 4820000.17166138 2003 6690000.05722046 2004 7000000 2005 4150000.09536743 2006 5440000.05722046 2007 8079999.923706049 2008 7159999.84741211 2009 1860000.01430511 2010 1190000.0572204601 2011 2480000.01907349 2012 1474151.3729095499 2013 2608593.22547913 2014 2267529.96444702 2015 2919708.96720886 2016 1376978.9934158302 2017 4534989.83383179 2019 2419300.0793457 2020 2972764.0151977497 2021 2037319.8986053497 2022 2735455.98983765