Year	current international $
2000	20.6805257242564
2001	21.2098950850263
2002	22.7447716241036
2003	21.9350568874717
2004	19.8514614364515
2005	36.0901499990985
2006	50.7831254018218
2007	52.6621372259478
2008	54.0948021435418
2009	50.4965749934899
2010	52.9582387194763
2011	53.7942720758223
2012	51.6378674854762
2013	55.9416804183527
2014	49.6132909809348
2015	45.6380794132574
2016	44.8460852840811
2017	34.0760767764035
2018	33.8013690178103
2019	36.0958971902981
2020	35.0259131350268
2021	37.1649742535146