Year	current US$
1993	957926479.115282
1994	867321917.012928
1995	829561308.739421
1996	812056761.796227
1997	961859010.799667
1998	963786947.854224
1999	659978037.286975
2000	630373209.687534
2001	696146532.163674
2002	694560911.090965
2003	760205005.152581
2004	915768485.386787
2005	1213023957.02842
2006	1959128965.06721
2007	2725310884.32196
2008	3124861128.57525
2009	3212352300.60039
2010	4644204409.85703
2011	6279402506.51736
2012	7449823715.86659
2013	7715978384.41459
2014	7168876505.45215
2015	4963874879.3627
2016	3922581790.30944
2017	4395883385.0282
2018	4478032372.45502
2019	5190177250.72478
2020	5093380127.13372
2021	5645573738.5135