Year	current US$
2000	2327.775688336376
2001	2461.7515444839146
2002	2679.314680485617
2003	2899.6706109632282
2004	3053.3928172645446
2005	3235.6244209989422
2006	3395.694880060334
2007	3576.9180041729455
2008	3611.685735185088
2009	3657.0925565976304
2010	3761.4489412328444
2011	3850.1248579361127
2012	3975.3011841612797
2013	3993.158409713393
2014	4063.8698142853855
2015	4183.128685216342
2016	4355.590176258747
2017	4498.115331722825
2018	4639.904793824321
2019	4768.954239876745
2020	4688.395459973294
2021	4984.786697399927