Year current US$ 1995 89000000 1996 93000000 1997 90000000 1998 98000000 1999 100000000 2000 49000000 2001 53000000 2002 51000000 2003 69000000 2004 82000000 2005 83000000 2006 93000000 2007 103000000 2008 116000000 2009 151000000 2010 201000000 2011 180000000 2012 172000000 2013 181000000 2014 184000000 2015 158000000 2016 379000000 2017 397000000 2018 443000000 2019 448500000 2020 166100006.10351598