Year current US$ 1973 19999.9995529652 1974 59999.9986588955 1975 50000.0007450581 1977 9999.99977648258 1978 19999.9995529652 1979 29999.999329447703 1980 469999.998807907 1981 2099999.90463257 1982 1429999.94754791 1983 1250000 1984 2150000.09536743 1985 2119999.8855590797 1986 10350000.3814697 1987 16469999.3133545 1988 13279999.7329712 1989 8460000.03814697 1990 22489999.7711182 1991 14590000.1525879 1992 6400000.09536743 1993 709999.978542328 1994 2470000.02861023 1995 209999.993443489 1996 1509999.9904632599 1997 140000.000596046 1998 379999.99523162795 1999 2220000.02861023 2000 2299999.95231628 2001 2640000.10490417 2002 2680000.0667572 2003 2980000.01907349 2004 3990000.00953674 2005 5619999.88555908 2006 6389999.8664856 2007 12119999.8855591 2008 13710000.038146999 2009 8069999.694824221 2010 9159999.84741211 2011 10409999.8474121 2012 11020000.4577637 2013 12260000.2288818 2014 27469999.3133545 2015 17750000 2016 14029999.7329712 2017 15220000.2670288 2018 14609999.6566772 2019 15439999.5803833 2020 28799999.237060502 2021 22360000.6103516 2022 33099998.4741211