Year	current international $
2000	15.1228539257397
2001	14.3370005144615
2002	12.471942470468
2003	9.00120094624554
2004	15.8891418014843
2005	23.7547808604877
2006	27.4828213211826
2007	26.1384701673145
2008	29.1874599511432
2009	48.9018841256641
2010	63.9260055188895
2011	81.7891852453357
2012	63.3405189434315
2013	49.249446049524
2014	44.4576296502421
2015	49.6319756685697
2016	45.5664006970872
2017	38.5947852331451
2018	41.2808055896473
2019	39.6427648648103
2020	41.263395071157
2021	50.4869208862129