Year	current international $
2000	1.65094657093226
2001	1.77344286201209
2002	1.90676434277611
2003	10.2997003010052
2004	8.36640150852656
2005	7.62098696523748
2006	8.48271004302264
2007	4.39820482463333
2008	3.88139495919134
2009	5.96511650802127
2010	4.42475733909223
2011	9.00576795817695
2012	7.27009922769424
2013	5.12175130360424
2014	7.81106117129581
2015	14.0206720720516
2016	18.0134390883802
2017	14.7435868546437
2018	13.8874571682248
2019	13.8645866570605
2020	18.1505628909239
2021	17.951272997648