Year	current US$
1989	6458721080.969987
1990	7537808900.571252
1991	8019644780.716758
1992	9005366882.64805
1993	8844899014.988663
1994	9138057506.947908
1995	11040541688.118465
1996	11776260540.219683
1997	11581172332.94731
1998	11797447563.238003
1999	11496504437.815613
2000	11804362525.57462
2001	11820770983.070961
2002	13766160137.451578
2003	16987074345.81995
2004	20456640250.97774
2005	24910170989.91287
2006	31124710150.144688
2007	38234308114.93829
2008	40535578849.46253
2009	28849273175.480698
2010	31341244200.80264
2011	35092145261.13641
2012	37706470850.565605
2013	38429974409.846954
2014	36463560705.56204
2015	34053282278.46847
2016	37359603015.048935
2017	43251628102.91805
2018	48693861138.76473
2019	47721740591.6489
2020	45393776085.9849
2021	49463648977.432724
2022	52569605156.58037
2023	56060648875.92026