Year	current US$
2001	1471591830.503986
2002	1643167559.6210423
2003	2091904081.9271903
2004	2836278783.635036
2005	3318010638.463695
2006	4159510813.8426476
2007	5093642971.391962
2008	6862358440.598442
2009	5696809290.381065
2010	6494233801.073064
2011	7599546757.497369
2012	8819456309.605461
2013	9368538316.712862
2014	8273575328.748694
2015	6349606099.643434
2016	7384183748.434073
2017	8920313270.141863
2018	9724420726.316727
2019	9842397098.817995