Year	constant 2010 US$
2007	20844187307.6463
2008	22346063992.7605
2009	21210415184.5743
2010	21486968604.6729
2011	22365231118.1884
2012	22656159761.012
2013	26527907642.3918
2014	24759745636.6198
2015	25837893165.5991
2016	26950952310.3383
2017	26892766542.9429
2018	27498582856.7208