Year	constant 2015 US$
2007	6839680253.934391
2008	16215664424.064322
2009	11679243291.51959
2010	19522397246.92721
2011	22218561718.07088
2012	22154649101.528614
2013	31973271220.48377
2014	34076376300.766487
2015	43389982336.77612
2016	27660127948.30214
2017	27174258841.75662
2018	27097114479.845867
2019	39877035579.588295
2020	13788501773.414835
2021	18233466162.71121