Year	US Dollars
2000	3814314984.07068
2001	4323211134.73182
2002	4572037079.13728
2003	4750664185.70517
2004	5055709457.86332
2005	5163084148.18543
2006	6533891835.30152
2007	7753789151.43811
2008	8650173555.47258
2009	8066170910.96227
2010	8395290882.58795
2011	9046283112.54053
2012	8749490200.59708
2013	9417502922.95709
2014	9684803757.89035
2015	10380979170.2026
2016	11119910597.543
2017	11923183922.8017