Year current US$ 1979 19999.9995529652 1980 19999.9995529652 1981 310000.002384186 1982 19999.9995529652 1983 180000.00715255702 1984 370000.00476837205 1985 90000.0035762787 1986 50000.0007450581 1987 90000.0035762787 1988 90000.0035762787 1989 379999.99523162795 1990 39999.9991059303 1991 170000.00178813902 1992 409999.99642372096 1993 219999.998807907 1994 129999.995231628 1995 140000.000596046 1996 150000.005960464 1997 100000.00149011599 1998 79999.9982118607 1999 239999.994635582 2000 100000.00149011599 2001 119999.997317791 2002 100000.00149011599 2003 360000.01430511504 2004 379999.99523162795 2005 1149999.97615814 2006 1029999.97138977 2007 750000 2008 270000.010728836 2009 389999.98569488496 2010 150000.005960464 2011 2859999.89509583 2012 2519999.98092651 2013 15359999.6566772 2014 1559999.9427795399 2015 779999.971389771 2016 850000.023841858 2017 1440000.0572204601 2018 1240000.0095367401 2019 1179999.94754791 2020 1039999.96185303 2021 280000.001192093 2022 230000.004172325