Year current US$ 1970 500000 1971 639999.985694885 1972 600000.023841858 1973 620000.004768372 1974 1289999.96185303 1975 1389999.98569489 1976 1169999.95708466 1977 490000.009536743 1978 660000.026226044 1979 1399999.97615814 1980 1480000.01907349 1981 910000.026226044 1982 1259999.9904632599 1983 1529999.97138977 1984 1629999.99523163 1985 1190000.0572204601 1986 1580000.04291534 1987 1659999.9666214 1988 1629999.99523163 1989 3690000.05722046 1990 2589999.91416931 1991 2579999.92370605 1992 3450000.04768372 1993 2890000.10490417 1994 1840000.0333786 1995 3309999.94277954 1996 2339999.91416931 1997 1860000.01430511 1998 2109999.89509583 1999 1789999.96185303 2000 1179999.94754791 2001 1769999.98092651 2002 1519999.98092651 2003 1440000.0572204601 2004 1840000.0333786 2005 1600000.02384186 2006 1610000.01430511 2007 1409999.9666214 2008 1259999.9904632599 2009 1529999.97138977 2010 1070000.05245209 2011 1409999.9666214 2012 1266423.34461212 2013 1483549.47566986 2014 1866704.9407959 2015 1720164.06059265 2016 1693469.16675568 2017 1843000.05435944 2018 2176672.93548584 2019 2315999.98474121 2020 1894999.98092651 2021 2118999.95803833 2022 1684000.01525879