Year current US$ 1974 730000.019073486 1975 2240000.00953674 1976 699999.988079071 1977 200000.00298023198 1978 1139999.98569489 1979 939999.997615814 1980 1950000.04768372 1981 2220000.02861023 1982 1519999.98092651 1983 1740000.0095367401 1984 2339999.91416931 1985 2049999.9523162802 1986 1779999.97138977 1987 2319999.9332428 1988 2910000.08583069 1989 1019999.98092651 1990 3690000.05722046 1991 1860000.01430511 1992 3579999.92370605 1993 4230000.01907349 1994 2220000.02861023 1995 1860000.01430511 1996 3549999.95231628 1997 1789999.96185303 1998 1000000 1999 449999.988079071 2000 200000.00298023198 2001 1009999.99046326 2002 1679999.94754791 2003 1179999.94754791 2004 2170000.07629395 2005 2069999.9332428002 2006 1659999.9666214 2007 2150000.09536743 2008 1980000.01907349 2009 319999.99284744303 2010 0 2011 639999.985694885 2012 1687416.79191589 2013 839230.120182037 2014 56320.0004398823 2015 788012.027740479 2016 621272.027492523 2019 165279.999375343 2020 1121774.7926712001 2021 808979.988098145 2022 591176.6290664669