Year	current international $
2000	19.4705781472661
2001	20.3680167123482
2002	23.1712237581691
2003	23.8067881226863
2004	24.2295983482164
2005	28.5516308687315
2006	29.771502656157
2007	31.1643833826362
2008	30.8259601891237
2009	31.5055113185813
2010	31.3659317617214
2011	29.1584282724191
2012	26.1389015593785
2013	27.4097186712723
2014	27.762120100497
2015	27.486037061777
2016	26.8571950864745
2017	28.2331523910553
2018	30.403743784041
2019	29.5800921065157
2020	29.5671620130821
2021	33.115902972619