Year	current international $
2000	9.25274867265058
2001	10.6132510713208
2002	11.9931137212389
2003	16.7815915637417
2004	17.0340086674146
2005	15.5487336125135
2006	11.4481555609053
2007	9.69644713981851
2008	13.1060017159224
2009	10.1490470977645
2010	9.48766687161055
2011	12.9159852308857
2012	13.5088584667305
2013	12.7877546224294
2014	10.8858684068049
2015	14.0788432501639
2016	16.2566588926552
2017	12.3283098215195
2018	9.32768951573274
2019	6.94114383948674
2020	17.9383905759978
2021	10.5256567638964