Year	current US$
2009	197532768008.3568
2010	296839252462.9555
2011	264898608215.6639
2012	241729595679.07556
2013	509695143871.5126
2014	288451228844.9204
2015	239683669727.0276
2016	240861710526.85904
2017	268551133988.7865
2018	318397298617.76843
2021	1676447560000