Year	current US$
1992	14211527182.543756
1993	13731007550.509573
1994	15132438319.1969
1995	18705038672.599762
1996	20947259885.06341
1997	22325009230.434246
1998	21807462900.66046
1999	22455412200.84214
2000	22413933656.86434
2001	21815824967.32018
2002	21770302488.90795
2003	25205599026.830456
2004	31173357006.221375
2005	36623159410.98597
2006	39772112055.34149
2007	43990131229.09697
2008	49846386767.890976
2009	49876206352.40704
2010	50427471589.930855
2011	50552245071.04761
2012	47858307549.42138
2013	47878546087.3089
2014	48698539904.811356
2015	45948070001.35089
2016	44991598427.57807
2017	45754231985.40046
2018	51121939423.82702
2019	54418624267.61253
2020	53561270586.214096
2021	59813645705.60689
2022	62487311397.96184
2023	64938273750.67876