Year	current US$
1998	51852902960.47977
1999	52077899065.536156
2000	54896365862.22149
2001	53575125128.23638
2002	51690253783.574745
2003	53524819076.07147
2004	54629016169.37801
2005	59810547031.57617
2006	67694076300.15516
2007	72824779744.73209
2008	78990689984.91972
2009	67919363212.70158
2010	70630750727.21588
2011	73811290861.53372
2012	70380364189.80263
2013	70438269224.9463
2014	73489397328.79346
2015	76908869130.78355
2016	81696304670.75359
2017	90949941787.98859
2018	93077303206.98833
2019	87289120169.48416
2020	89585450272.94089
2021	105563591846.02904
2022	91161811594.22693
2023	95231569622.47002