Year current US$ 1970 159999.99642372102 1971 259999.990463257 1972 50000.0007450581 1973 129999.995231628 1974 439999.997615814 1975 2859999.89509583 1976 1500000 1977 1029999.97138977 1978 800000.011920929 1979 1419999.95708466 1980 1570000.05245209 1981 2130000.1144409203 1982 2160000.08583069 1983 5039999.96185303 1984 6530000.20980835 1985 5789999.96185303 1986 6110000.1335144 1987 5289999.96185303 1988 15729999.5422363 1989 1549999.95231628 1990 6199999.80926514 1991 5480000.01907349 1992 5829999.92370605 1993 4369999.88555908 1994 5599999.90463257 1995 7480000.01907349 1996 2200000.04768372 1997 3829999.92370605 1998 5280000.20980835 1999 2789999.96185303 2000 910000.026226044 2001 3089999.91416931 2002 2119999.8855590797 2003 1940000.0572204601 2004 2109999.89509583 2005 1070000.05245209 2006 579999.983310699 2007 2539999.96185303 2008 560000.002384186 2009 639999.985694885 2010 270000.010728836 2011 129999.995231628 2012 275365.203619003 2013 13887.0002701879 2014 1084476.70936584 2015 60977.9991209507 2016 4322062.96920776 2017 4672220.23010254 2018 1108016.13330841 2019 2458499.9084472703 2020 4147148.6091613797 2021 1610280.03692627 2022 7199243.54553223