Year	current international $
2000	2151.33884962839
2001	2271.73304424044
2002	2428.89438906911
2003	2555.54313776668
2004	2750.67777376534
2005	2842.85077586934
2006	3024.01749185928
2007	3196.31382798037
2008	3310.37771090491
2009	3565.90683766203
2010	3607.32119862404
2011	3791.20094935004
2012	3807.51201477603
2013	4182.5130829639
2014	4682.65337459934
2015	4807.89635171632
2016	5059.24596164933
2017	5133.73032477183
2018	5331.50783540381
2019	5390.86315420617
2020	5955.18719180224
2021	6488.26900622656