Year	current US$
1995	37641066735.3069
1996	34667523085.6564
1997	39398737824.7401
1998	32765434919.6269
1999	24289457216.1817
2000	24188073480.1621
2001	29930554398.1484
2002	33584337981.7589
2003	39634950208.2665
2004	52313174098.058
2005	70830407998.0332
2006	88596812710.1477
2007	120138769873.248
2008	151435415353.639
2009	94270899905.2274
2010	113182037020.432
2011	134802493092.119
2012	155027862042.205
2013	160262796127.738
2014	114008561197.867
2015	82933027873.4708
2016	81506683250.4513
2017	99432791110.6306
2018	115101330285.145
2019	135932035529.804
2020	138470185672.587
2021	163914375539.316