Year	current international $
2000	7.750060177546972
2001	6.9545302747964275
2002	7.910727071791076
2003	11.190686766663505
2004	13.478789667959695
2005	18.17342810005921
2006	19.533660363392368
2007	20.38311051024181
2008	21.359643495319144
2009	23.876655920728304
2010	25.231334431176048
2011	27.249079626428706
2012	25.320043921607354
2013	28.439096759341446
2014	25.11796791621667
2015	24.75011577239383
2016	24.98426244599292
2017	24.661761354414406
2018	24.625856045830954
2019	26.666082675749717
2020	25.56161895448699
2021	29.124329946041875