Year	US Dollars
1995	8378949792.51634
1996	8973895872.13446
1997	9617600104.11785
1998	10116366146.5467
1999	11459607481.6643
2000	12818015542.8051
2001	14140165834.2189
2002	15170049019.2232
2003	16890790683.3634
2004	19107299160.10369
2005	22206136131.6691
2006	25402834570.7201
2007	28926843381.2532
2008	31354828269.2419
2009	31547713869.49269
2010	33750438571.88429
2011	36844168821.8601
2012	40049665514.11049
2013	44107914990.95481
2014	47621475164.04662
2015	51050595867.54079
2016	55288437520.03169
2017	60124230881.29401