Year	current US$
1995	4033907754.6882915
1996	4346879585.671126
1997	5186668968.493742
1998	5925702201.12214
1999	6060243418.213206
2000	6562075097.108329
2001	6980971083.297367
2002	8254748755.517986
2003	10765780033.840948
2004	12830247143.566813
2005	14753971887.050629
2006	17009818044.92408
2007	22504726327.312534
2008	27362378164.788525
2009	23396384487.07256
2010	22546882745.37221
2011	25460870561.670048
2012	25102502403.378212
2013	27788020785.5503
2014	28877385437.129513
2015	24821963584.879284
2016	26231569286.397728
2017	28864485999.362404
2018	33015817687.501152
2019	33670015028.43132
2020	34873875399.47247
2021	40869551201.55748
2022	43466250567.953476
2023	49127380618.461655