Year	current international $
2000	13.0573337918658
2001	5.49923990635487
2002	5.31298950779088
2003	8.94999440074145
2004	9.62975251433137
2005	8.75099441781611
2006	8.63912084302894
2007	9.29787034040937
2008	9.85272918878605
2009	10.7602214940837
2010	9.70499120538258
2011	12.7541837814829
2012	13.9064538374456
2013	21.8633571958415
2014	22.268568930444
2015	18.9736755749269
2016	19.4176355533667
2017	14.5730094763805
2018	11.5472433004392
2019	18.5536143290792
2020	16.6250746331604
2021	17.3357907921184