Year	US Dollars
1997	795496209.71743
1998	1052443917.38462
1999	1103376452.35623
2000	1550044700.0013
2001	1412180489.84646
2002	1485103903.58285
2003	958267021.64606
2004	1037933436.8075
2005	1244963057.5595
2006	1446870052.6793
2007	1720471992.66255
2008	1929228396.8726
2009	2204604801.55168
2010	2330843165.28487
2011	2747378544.96665
2012	2791028308.69302
2013	3068640165.19676
2014	3106402402.10394
2015	3244554881.00227
2016	3248049212.2416
2017	3361799646.91103