Year	constant 2010 US$
2010	18171005556.0468
2011	19720915944.3972
2012	22094925078.6826
2013	24373841369.3208
2014	26599648528.0399
2015	28904010417.1207
2016	31235724222.7949
2017	33842312142.4719
2018	36436325368.1924