Year	current US$
1996	6808514447.064908
1997	7735994103.14651
1998	7853311380.57611
1999	7783384738.659439
2000	10227669663.079689
2001	9700304982.866844
2002	10622802296.45171
2003	11356241708.928133
2004	13091757665.435055
2005	14112345544.096361
2006	15919286964.498766
2007	19861926306.890602
2008	22016148342.17012
2009	27461400849.85952
2010	27912064123.78735
2011	30898805023.47381
2012	31988161074.69703
2013	33478304843.807873
2014	36258712067.53542
2015	37734766721.70725
2016	36402459501.31547
2017	39250584913.00591
2018	43850811346.97017
2019	47951244553.4017
2020	48213483399.94042
2021	50254356207.97911
2022	55382979723.97692
2023	61374507029.10381