Year current US$ 1991 219999.998807907 1992 219999.998807907 1993 189999.99761581398 1994 150000.005960464 1995 209999.993443489 1996 250000 1997 140000.000596046 1998 50000.0007450581 2000 19999.9995529652 2001 50000.0007450581 2002 90000.0035762787 2003 119999.997317791 2004 19999.9995529652 2005 109999.999403954 2006 209999.993443489 2007 1049999.95231628 2008 680000.007152557 2009 920000.016689301 2010 620000.004768372 2011 170000.00178813902 2012 579999.983310699 2013 280000.001192093 2014 129999.995231628 2015 250000 2016 370000.00476837205 2017 3960000.03814697 2018 1460000.03814697 2019 1580000.04291534 2020 1940000.0572204601 2021 1259999.9904632599 2022 779999.971389771