Year	constant 2015 US$
2007	8540854005.390945
2008	15029043142.909725
2009	11353459698.804924
2010	17314062084.068577
2011	19608136377.658596
2012	18007985831.457726
2013	29079138282.705643
2014	27354568293.39857
2015	33954626908.610687
2016	28019121108.01227
2017	27916470848.065296
2018	28658130302.747192
2019	39730101159.62228
2020	25854854886.189087
2021	30737177876.264545