Year	current US$
1995	20834067431.1847
1996	23474058219.4784
1997	23897292998.6785
1998	22889365361.1849
1999	27212299370.6679
2000	27834550683.7189
2001	28783391155.1108
2002	29669882787.1831
2003	36075151089.39
2004	42328513627.923
2005	43138618472.4709
2006	47318514214.2157
2007	57087407543.1587
2008	63786035620.8961
2009	65317816746.6993
2010	76213105443.0757
2011	58765698514.0378
2012	63317649637.8972
2013	60136935407.7569
2014	66310065151.1821
2015	66792283638.7598
2016	65348614889.6322
2017	77375482142.085