Year	US Dollars
1990	1730299105.00422
1991	1785006720.94824
1992	1709677259.50703
1993	1749713668.46866
1994	1855874570.82904
1995	2042667335.10698
1996	1992502601.16623
1997	2143019415.47829
1998	2262144041.89846
1999	2406658297.51162
2000	2385293513.73638
2001	2563805136.81466
2002	2695234829.80012
2003	2618218573.98841
2004	2827387261.03144
2005	2954495674.80286
2006	3189879523.12423
2007	3431025581.13953
2008	3551414076.87234
2009	3671156822.99949
2010	3859131329.6201
2011	4067092636.55372
2012	4315571079.20337
2013	2771770736.52569
2014	2852359259.1677
2015	3022247140.63
2016	3189962891.09764
2017	3391006777.15182