Year	constant 2010 US$
2006	16191036358.5972
2007	17146537962.015
2008	18204197799.0482
2009	17681273300.0568
2010	17456153856.5721
2011	17479407471.7282
2012	17331278571.7428
2013	17832379864.4957
2014	17949631970.8511
2015	18480446070.0359
2016	18985388283.263
2017	19443279590.3349
2018	20024415330.1991