Year current US$ 2005 51617139198.17039 2006 60481283899.40762 2007 74195207619.76723 2008 76053608476.65654 2009 77572936972.40434 2010 85447234512.5008 2011 84083553688.80374 2012 89023883421.35272 2013 97111990629.4831 2014 108808544465.28885 2015 110990732413.38713 2016 111678748464.89522 2017 116785480649.74501 2018 114515524741.21887 2019 121506562095.78444