Year	current US$
1998	942066129.6153986
1999	1009336751.9778731
2000	1106423085.951203
2001	1170619218.6231215
2002	1169241533.6593876
2003	1324966308.0694735
2004	1418453083.3517191
2005	1516925094.6541235
2006	2111579816.5237608
2007	2544665240.3932734
2008	3009674973.86176
2009	2765038290.313258
2010	2793527746.8389907
2011	2919063476.7012167
2012	3377383479.1540647
2013	3834036447.3683887
2014	3652049754.1203594
2015	4062789871.7419543
2016	3344025053.924777
2017	3769705795.939144
2018	4366138218.887347
2019	4218556306.235839