Year current US$ 1977 569999.992847443 1980 639999.985694885 1981 709999.978542328 1982 1009999.99046326 1983 1100000.02384186 1984 769999.980926514 1985 800000.011920929 1986 370000.00476837205 1987 569999.992847443 1988 1210000.03814697 1989 889999.985694885 1990 479999.989271164 1991 1039999.96185303 1992 1200000.04768372 1993 1629999.99523163 1994 2299999.95231628 1995 3220000.02861023 1996 1500000 1997 2220000.02861023 1998 2740000.00953674 1999 1289999.96185303 2000 939999.997615814 2001 2490000.00953674 2002 3970000.02861023 2003 1649999.97615814 2004 2009999.9904632599 2005 1419999.95708466 2006 1440000.0572204601 2007 1740000.0095367401 2008 1970000.02861023 2009 1679999.94754791 2010 1879999.99523163 2011 1889999.98569489 2012 1889677.0477294899 2013 2927438.97438049 2014 1933092.7133560202 2015 1824783.0867767301 2016 1000187.9930496201 2017 1217625.6179809598 2018 2117640.01846313 2019 2547132.25364685 2020 3021039.96276855 2021 4057683.4678649902 2022 3243769.8841095003