Year	current international $
2000	17.568213693526
2001	19.353602806771
2002	20.9124547346318
2003	22.2862493132664
2004	24.1663042147917
2005	27.9176894295314
2006	31.1537614919207
2007	35.3745524306438
2008	37.7321803900583
2009	40.8103031704588
2010	45.185224941375
2011	50.2872095349147
2012	56.1526529930953
2013	59.6936078849192
2014	64.4640811095726
2015	69.6340052859354
2016	77.8733621077
2017	80.1504542353398
2018	85.8965132939366
2019	92.6840756527053
2020	99.0982519970082
2021	112.089803095834