Year current US$ 1968 29999.999329447703 1969 59999.9986588955 1970 79999.9982118607 1971 100000.00149011599 1972 109999.999403954 1975 9999.99977648258 1976 19999.9995529652 1977 50000.0007450581 1978 39999.9991059303 1979 70000.0002980232 1980 189999.99761581398 1981 39999.9991059303 1982 19999.9995529652 1983 7940000.05722046 1984 460000.00834465 1985 9840000.15258789 1986 26350000.3814697 1987 15220000.2670288 1988 33540000.915527303 1989 21610000.6103516 1990 19950000.762939498 1991 6329999.92370605 1992 18610000.6103516 1993 6170000.07629395 1994 9369999.88555908 1995 2829999.92370605 1996 7000000 1997 11020000.4577637 1998 5809999.94277954 1999 819999.992847443 2000 550000.011920929 2001 1409999.9666214 2002 1320000.05245209 2003 889999.985694885 2004 1820000.05245209 2005 810000.002384186 2006 5369999.88555908 2007 2509999.99046326 2008 5050000.19073486 2009 3769999.98092651 2010 3019999.98092651 2011 519999.980926514 2012 1450000.04768372 2013 1860000.01430511 2014 3440000.05722046 2015 2660000.08583069 2016 1590000.0333786 2017 79169998.1689453 2018 23329999.9237061 2019 10930000.3051758 2020 19420000.0762939 2021 22690000.5340576 2022 22909999.8474121