Year	current US$
2005	3929732536.1760015
2006	8303688880.004676
2007	12450302649.84638
2008	18431027698.32084
2009	11337519864.96137
2010	13817128886.652252
2011	16617420541.494604
2012	16405315492.795996
2013	16272749837.359364
2014	17164096053.914232
2015	18050557517.980366
2016	13035814678.860703
2017	18164479575.68862
2018	24345076315.104897
2019	28252107323.752117