Year current US$ 1970 119999.997317791 1971 219999.998807907 1972 270000.010728836 1973 319999.99284744303 1974 219999.998807907 1975 479999.989271164 1976 439999.997615814 1977 230000.004172325 1978 660000.026226044 1979 1149999.97615814 1980 790000.021457672 1981 1029999.97138977 1982 1370000.00476837 1983 1029999.97138977 1984 1720000.02861023 1985 3299999.95231628 1986 3319999.9332428 1987 3690000.05722046 1988 2420000.07629395 1989 2230000.01907349 1990 2440000.05722046 1991 3019999.98092651 1992 2960000.03814697 1993 3490000.00953674 1994 4579999.92370605 1995 4090000.1525878897 1996 4969999.79019165 1997 3779999.97138977 1998 4260000.228881841 1999 5530000.20980835 2000 5900000.09536743 2001 5889999.8664856 2002 6139999.8664856 2003 6630000.11444092 2004 6849999.90463257 2005 8159999.847412109 2006 12149999.6185303 2007 19899999.6185303 2008 19520000.4577637 2009 18159999.8474121 2010 22809999.4659424 2011 20350000.3814697 2012 16990537.6434326 2013 20813076.0192871 2014 19788568.4967041 2015 19704092.0257568 2016 20196271.8963623 2017 27148719.787597697 2018 22549951.5533447 2019 20982000.3509521 2020 27861999.5117188 2021 24950000.762939498 2022 22500000