Year	US Dollars
1990	1568863595045.26025
1991	1691833562023.24976
1992	1762782607566.15015
1993	1780532559384.03003
1994	1856190010830.58984
1995	1922123141647.58057
1996	1972682367821.95996
1997	2014776584291.45996
1998	2067823602522.90918
1999	2145907376333.5603
2000	2228952398723.10986
2001	2327174164652.43066
2002	2390131145997.23975
2003	2452664014840.70898
2004	2611597093017.28027
2005	2659840888439.71973
2006	2869675662613.68018
2007	3042256679924.32031
2008	3152657054294.17969
2009	3101465196045.79932
2010	3270947793231.81104
2011	3513624912677.06934
2012	3585851182476.62988
2013	3730248688666.78076
2014	3888972698673.62061
2015	3977535630284.229
2016	4098522723193.91016
2017	4274017184829.31006