Year	current US$
1990	669012640.272168
1991	788537646.021266
1992	799737684.862386
1993	892081135.099355
1994	1036480081.63484
1995	1149134405.89665
1996	1249985754.03
1997	1348328822.41017
1998	1428593056.87084
1999	1520906323.23582
2000	1572725321.88975
2001	1886344937.01406
2002	1998146376.31868
2003	2181557494.16457
2004	2427088617.35293
2005	2709587015.08397
2006	2981111710.47367
2007	3395050748.38747
2008	4188029358.89682
2009	4336496354.11998
2010	4652251920.03048
2011	4939581080.13314
2012	5455589709.4038
2013	5963064004.08625
2014	6221008870.40144
2015	6789045363.51436
2016	7221095401.07975
2017	7372663718.19732
2018	6939339237.00956
2019	7701507002.66275
2020	7397390919.59579
2021	8013108396.62723