Year current US$ 1970 409999.99642372096 1971 300000.011920929 1972 180000.00715255702 1973 230000.004172325 1974 239999.994635582 1975 550000.011920929 1976 360000.01430511504 1977 589999.973773956 1978 540000.021457672 1979 519999.980926514 1980 920000.016689301 1981 1070000.05245209 1982 1149999.97615814 1983 1269999.98092651 1984 1509999.9904632599 1985 1879999.99523163 1986 2049999.9523162802 1987 2920000.07629395 1988 889999.985694885 1989 2460000.03814697 1990 2000000 1991 2930000.0667572 1992 4079999.92370605 1993 4429999.82833862 1994 4329999.92370605 1995 4949999.80926514 1996 6909999.84741211 1997 2920000.07629395 1998 3180000.0667572 1999 2980000.01907349 2000 2940000.05722046 2001 2990000.00953674 2002 3319999.9332428 2003 3589999.91416931 2004 3900000.09536743 2005 4510000.228881841 2006 4510000.228881841 2007 7670000.07629395 2008 9380000.11444092 2009 8220000.26702881 2010 9659999.84741211 2011 10289999.961853001 2012 7144884.58633423 2013 10253112.7929688 2014 9603807.44934082 2015 8091616.630554199 2016 8497202.87322998 2017 9498000.1449585 2018 7988718.032836909 2019 10331999.7787476 2020 8873000.1449585 2021 10418999.671936 2022 8236000.06103516