Year	current international $
2000	17.048035998748222
2001	17.933406836199886
2002	18.540376547451984
2003	20.01237409458236
2004	20.792279109123157
2005	22.85600892999151
2006	24.33415414880664
2007	25.74888280929271
2008	25.65545823996266
2009	27.850390316012607
2010	27.322294727988123
2011	27.336271613991446
2012	28.980287618363825
2013	29.992949978742097
2014	31.88436065158586
2015	32.48261135736271
2016	35.55700886022619
2017	36.165391680633455
2018	37.99217368588907
2019	40.37160175128509
2020	44.25199002373111
2021	45.83402989884752