Year	current international $
2000	7.750060177546973
2001	6.9545302747964275
2002	7.910727071791076
2003	11.190686766663505
2004	13.478789667959697
2005	18.17342810005921
2006	19.533660363392368
2007	20.383110510241806
2008	21.35964349531914
2009	23.876655920728304
2010	25.231334431176048
2011	27.24907962642871
2012	25.32004392160736
2013	28.43909675934145
2014	25.11796791621667
2015	24.750115772393837
2016	24.98426244599292
2017	24.661761354414406
2018	24.625856045830954
2019	26.666082675749713
2020	25.561618954486985
2021	29.124329946041872