Year	current international $
2000	16.30778541984102
2001	17.426407745486348
2002	17.380159289025855
2003	19.820575219929005
2004	19.578083574465108
2005	20.149908692882796
2006	20.074506274178024
2007	21.916593003133265
2008	19.874938752451477
2009	22.651133995817272
2010	20.870344844516953
2011	18.56496749640172
2012	19.850353511400062
2013	17.655933032629104
2014	19.407010703994004
2015	17.60079770095832
2016	22.367216016601535
2017	20.511680757844704
2018	19.715443067355626
2019	19.73775675624358
2020	24.97552031731448
2021	23.82407370937667