Year	US Dollars
1990	1039608849976.88
1991	1088514443251.07007
1992	1120423652776.04004
1993	1139672988772.24023
1994	1187287717310.83984
1995	1251330503123.21997
1996	1293025325582.43994
1997	1348232669699
1998	1410666471788.21997
1999	1450330523890.59985
2000	1532836630749.78003
2001	1587859658416.47021
2002	1626940007698.94995
2003	1658549455026.98999
2004	1696439428159.11963
2005	1744720332016.19995
2006	1887466928285.83032
2007	1987930702551.13989
2008	2063595995375.75024
2009	2037999203944.48926
2010	2073069389477.72046
2011	2152582158386.79028
2012	2154531375588.28003
2013	2172610704748.01025
2014	2192795858548.16968
2015	2213146751080.18945
2016	2332088039867.10986
2017	2400027253336.4502