Year	current US$
2009	195157408008.3568
2010	294389352462.9555
2011	262116138215.66394
2012	238870455679.07556
2013	506447663871.5126
2014	285263968844.9204
2015	236344469727.0276
2016	237471590526.85904
2017	264659643988.7865
2018	314662378617.76843
2021	1672040440000