Year	current international $
2000	5.15448368976723
2001	26.2084731755549
2002	18.7336228327995
2003	13.3852254606359
2004	13.2669111939694
2005	11.285486689364
2006	21.5828464435327
2007	25.3813316218789
2008	15.2973482247054
2009	35.2507208631702
2010	22.5000790377013
2011	19.8250752683407
2012	13.8455766799386
2013	6.72934976579281
2014	2.28368683043925
2015	7.56933974134408
2016	6.66802761666326
2017	12.2002979316456
2018	13.2868117961552
2019	4.7042162088721
2020	8.62226564645216
2021	2.37607946974643