Year current US$ 2000 6419701 2001 6565543 2002 8174079.000000001 2003 8233708 2004 7623097 2005 3174232 2006 4169171.0000000005 2007 8502145 2008 4213234 2009 4900822 2010 5323415 2011 6818679 2012 49904982 2013 21976211 2014 18147592 2015 15807831 2016 45964331 2017 108743987 2018 146149313 2019 214743463 2020 197581830