Year	constant 2010 US$
2006	20591294198.8619
2007	21834375876.9352
2008	25136158755.6989
2009	25676451320.0695
2010	30119993640.8106
2011	31906112341.3173
2012	33938069088.8676
2013	40665099798.0747
2014	42323554636.1273
2015	42185262339.4528
2016	41079208124.2738
2017	45723974172.6552