Year current US$ 1970 140000.000596046 1971 289999.99165535 1972 280000.001192093 1973 239999.994635582 1974 310000.002384186 1975 400000.00596046395 1976 230000.004172325 1977 200000.00298023198 1978 219999.998807907 1979 239999.994635582 1980 730000.019073486 1981 189999.99761581398 1982 379999.99523162795 1983 509999.99046325695 1984 330000.013113022 1985 740000.009536743 1986 730000.019073486 1987 1100000.02384186 1988 159999.99642372102 1989 769999.980926514 1990 1620000.00476837 1991 2619999.8855590797 1992 1919999.95708466 1993 1309999.9427795399 1994 2380000.1144409203 1995 1870000.00476837 1996 2440000.05722046 1997 3819999.9332428 1998 3250000 1999 2690000.05722046 2000 2390000.10490417 2001 2730000.01907349 2002 3119999.8855590797 2003 4659999.84741211 2004 3519999.98092651 2005 4409999.84741211 2006 6409999.84741211 2007 9739999.77111816 2008 7679999.82833862 2009 8430000.30517578 2010 9569999.69482422 2011 13529999.7329712 2012 7229437.82806396 2013 8279596.32873535 2014 8446299.55291748 2015 9926996.2310791 2016 11946985.244750999 2017 10509869.575500501 2018 13520684.2422485 2019 10762999.5346069 2020 12746999.7406006 2021 12336999.893188499 2022 12336999.893188499