Year current US$ 1970 19999.9995529652 1973 9999.99977648258 1974 39999.9991059303 1975 70000.0002980232 1976 100000.00149011599 1977 109999.999403954 1978 100000.00149011599 1979 170000.00178813902 1980 50000.0007450581 1981 79999.9982118607 1982 200000.00298023198 1983 29999.999329447703 1984 50000.0007450581 1985 109999.999403954 1986 200000.00298023198 1987 200000.00298023198 1988 170000.00178813902 1989 79999.9982118607 1990 209999.993443489 1991 2160000.08583069 1992 740000.009536743 1993 540000.021457672 1994 119999.997317791 1995 79999.9982118607 1996 39999.9991059303 1997 140000.000596046 1998 300000.011920929 1999 379999.99523162795 2000 230000.004172325 2001 189999.99761581398 2002 150000.005960464 2003 189999.99761581398 2004 2680000.0667572 2005 2900000.09536743 2006 18450000.762939498 2007 13140000.3433228 2008 20110000.6103516 2009 5119999.88555908 2010 30069999.6948242 2011 14289999.961853001 2012 14279999.7329712 2013 7559999.94277954 2014 2720000.02861023 2015 4050000.1907348596 2016 8569999.69482422 2017 4960000.03814697 2018 5400000.09536743 2019 2369999.8855590797 2020 469999.998807907 2021 1019999.98092651 2022 4559999.94277954