Year current US$ 1979 9999.99977648258 1985 9999.99977648258 1986 9999.99977648258 1988 79999.9982118607 1990 70000.0002980232 1991 509999.99046325695 1992 29999.999329447703 1998 19999.9995529652 1999 39999.9991059303 2002 59999.9986588955 2004 620000.004768372 2005 330000.013113022 2006 629999.995231628 2008 319999.99284744303 2009 550000.011920929 2010 460000.00834465 2011 1450000.04768372 2012 370000.00476837205 2013 660000.026226044 2014 490000.009536743 2015 469999.998807907 2016 389999.98569488496 2017 239999.994635582 2018 170000.00178813902 2019 100000.00149011599 2022 540000.021457672