Year	US Dollars
2006	11301765527.734
2007	12712758434.7194
2008	13164787345.9209
2009	13352545771.3184
2010	13963587861.1042
2011	15053591102.4272
2012	15886467600.4817
2013	16574498672.2112
2014	17034610345.653
2015	17845749725.0779
2016	18759982610.4281
2017	20221834664.9884