Year	current international $
2000	14.953269858392957
2001	15.919036115806982
2002	16.127516810333862
2003	16.913787844049924
2004	18.999031244699474
2005	18.986377931461604
2006	22.5442776039603
2007	24.46858252363735
2008	24.702739387725583
2009	35.06257291167333
2010	32.80456163804038
2011	34.89873575695794
2012	36.801269985360214
2013	35.49839047981652
2014	35.861546104540686
2015	39.558711936550786
2016	39.213881260816464
2017	32.53306984765641
2018	45.99241789874584
2019	50.16905225743251
2020	47.177062318672704
2021	49.25614676974409