Year	US Dollars
1996	10198830986.9539
1997	10641719804.3132
1998	10979768659.4951
1999	11437299150.2294
2000	11825238664.5667
2001	11930753147.7603
2002	12035723199.7827
2003	12302932468.7996
2004	12219115108.9453
2005	12774042981.5887
2006	13582827194.0259
2007	14410354600.8524
2008	14824072380.9414
2009	15414052635.0244
2010	14765431149.365
2011	15929101063.5587
2012	16742282537.6217
2013	17652839162.6957
2014	18511600582.4438
2015	18909569565.4613
2016	19581812673.5611
2017	20057507161.2092