Year	current international $
2000	3.68899593008987
2001	10.9030570853591
2002	8.88549694732901
2003	14.2675657148619
2004	11.9862251237322
2005	12.6190532881453
2006	15.2007817920775
2007	18.1701170112312
2008	9.0670984766452
2009	15.2510475829717
2010	11.2627926170546
2011	8.59011356152444
2012	12.354238636024
2013	8.21681792704517
2014	3.66990957975996
2015	5.77422304904665
2016	5.35007284992435
2017	4.61627720879474
2018	3.7744839608049
2019	6.52507772473648
2020	7.06228029317858
2021	6.16060880961699