Year constant 2011 international $ 1996 6119024339.99598 1997 5015913692.33955 1998 5967952439.62168 1999 7286541268.17485 2000 7925238503.39512 2001 8383022715.21002 2002 9181306777.11574 2003 10485956787.9404 2004 10974204217.8593 2005 11780031182.5247 2006 12862048919.1135 2007 14847193177.873 2008 16902439775.1667 2009 17581650952.0135 2010 17885108851.2505 2011 18207429349.7711 2012 18234095770.3315 2013 18570708044.5182 2014 19092536264.6368 2015 19119338552.8252 2016 19500134624.8769 2017 19956251841.9455 2018 20563274561.7971