Year	current international $
2000	16.8544403654296
2001	14.6715156462953
2002	15.5313301764973
2003	14.6825082968642
2004	16.1307445323434
2005	15.6322895488589
2006	16.9336286761185
2007	18.2392882447648
2008	19.7067576739286
2009	22.4532687963253
2010	20.718428281921
2011	19.0042371495908
2012	26.5119061744362
2013	27.9720766755661
2014	33.1077246896374
2015	36.8427678625751
2016	40.0380233150364
2017	45.1043793074794
2018	45.9422766595999
2019	53.0894040028463
2020	73.5835103147794
2021	61.7363580259445