Year	current US$
2006	444670370.3703703
2007	509862962.9629629
2008	588777777.7777778
2009	605588888.8888888
2010	582696296.2962962
2011	577562962.9629629
2012	577511111.111111
2013	548492592.5925926
2014	586092592.5925926
2015	611788888.8888888
2016	648374074.074074
2017	628714814.8148147
2018	820096296.2962961