Year current US$ 1976 9999.99977648258 1977 29999.999329447703 1978 519999.980926514 1979 19999.9995529652 1981 109999.999403954 1982 180000.00715255702 1983 19999.9995529652 1984 340000.00357627904 1985 670000.016689301 1986 629999.995231628 1987 2160000.08583069 1988 1200000.04768372 1989 629999.995231628 1990 750000 1991 829999.983310699 1992 1649999.97615814 1993 129999.995231628 1994 1379999.99523163 1995 1799999.95231628 1996 7909999.84741211 1997 5739999.771118159 1998 3630000.1144409203 1999 2670000.07629395 2000 870000.004768372 2001 5219999.79019165 2002 3930000.0667572 2003 4010000.2288818406 2004 1220000.02861023 2005 6679999.82833862 2006 4760000.228881841 2007 4880000.11444092 2008 13159999.8474121 2009 2559999.94277954 2010 8840000.15258789 2011 20229999.5422363 2012 3230000.01907349 2013 2569999.9332428 2014 2289999.96185303 2015 1899999.97615814 2016 400000.00596046395 2017 1639999.98569489 2018 3480000.01907349 2019 4590000.15258789 2020 4090000.1525878897 2021 4039999.96185303 2022 4500000