Year	current US$
1990	14747182203.389832
1991	9892826086.956522
1992	7386170400.943397
1993	6955369312.1693125
1994	8058963720.930233
1995	9701955115.244642
1996	9921480169.971672
1997	9875306122.44898
1998	10518606462.781303
1999	10017114040.870138
2000	10172240637.10719
2001	10802787759.131294
2002	12290189526.18454
2003	15114769177.368969
2004	18946986796.213253
2005	21655505534.137543
2006	25611438966.252666
2007	32637319159.282066
2008	36989152940.771866
2009	28957253603.13201
2010	30985760883.90006
2011	36236196221.70241
2012	33951293540.458603
2013	35932394253.26324
2014	38073728494.27947
2015	33256871127.94803
2016	34738156236.37946
2017	40389935067.05537
2018	45938876526.15291
2019	45475234205.10581
2020	41784361742.935524
2021	51668781592.41778
2022	56547401875.19866
2023	57301457874.08925