Year	current international $
2000	19.2750338074268
2001	16.1067245705642
2002	10.9215784171662
2003	11.9778898396151
2004	13.5378003477072
2005	14.0821769285194
2006	7.21056472241891
2007	20.8719222303428
2008	22.5666288043919
2009	22.2391861828321
2010	21.8110282551619
2011	12.0045013790195
2012	12.8174340576462
2013	14.2290302760013
2014	14.0703929099756
2015	16.4611438310895
2016	16.5307221614965
2017	14.8266884734748
2018	17.2361558211375
2019	13.1710319586046
2020	12.6496454940378
2021	13.4014043424557