Year	current US$
1995	49497811022.0866
1996	51999633371.857
1997	59225011469.5985
1998	56758142573.0127
1999	56043876361.9978
2000	64524192134.3363
2001	67112926761.0913
2002	72459953035.1145
2003	77695702314.3252
2004	93565180355.0928
2005	102972813063.27
2006	114555635469.855
2007	138845986035.825
2008	160805493327.614
2009	161939693062.048
2010	196212765834.884
2011	234786942072.609
2012	280761248101.714
2013	329683699106.411
2014	428956046168.16
2015	423250777207.88
2016	412795784147.997
2017	445298709236.955