Year current US$ 1995 71000000 1996 117000000 1997 99000000 1998 129000000 1999 240000000 2000 345000000 2001 429000000 2002 509000000 2003 441000000 2004 673000000 2005 929000000 2006 1109000000 2007 1169000000 2008 1280000000 2009 1463000000 2010 1671000000 2011 2258000000 2012 2663000000 2013 2895000000 2014 3220000000 2015 3419000000 2016 3523000000 2017 4024000000 2018 4832000000 2019 5312000000 2020 1119000000