Year	current US$
1992	51176534.92
1993	258506100
1994	395576700
1995	695976600
1996	861508300
1997	891350569.5
1998	902388700
1999	842738000
2000	884661711
2001	876516631
2002	986645022
2003	1277189867
2004	1348054611
2005	1800765207
2006	2191190570
2007	3267788096
2008	4426128618
2009	3304154780
2010	3748947517
2011	4144599290
2012	4264832091
2013	4476797896
2014	4401599931
2015	3253955791
2016	3263928091
2017	4097065111
2018	4975537488
2019	5548206975
2020	4583273868