Year current US$ 1992 129999.995231628 1993 270000.003278255 1994 500000.01490116003 1996 50000.0007450581 1997 320000.0021606686 1998 900000.0208616257 1999 66159997.25274745 2000 52989998.936653174 2001 58350000.75213616 2002 76559998.47687781 2003 42889998.62968923 2004 25889999.24808736 2005 37139998.530969046 2006 41619999.969378114 2007 46829999.394714795 2008 40020001.70573592 2009 35379999.39918514 2010 33819999.84383582 2011 33839999.76702037 2012 29149998.888373382 2013 30330000.03919008 2014 27660000.495612636 2015 17130000.244826064 2016 23539999.84636907 2017 15909999.579191208 2018 17389999.799430337 2019 16280000.003054738 2020 58880001.6772002 2021 19910000.070929486 2022 13960000.1256913