Year	current international $
2000	7.79953938287445
2001	9.17249478592279
2002	8.58417346327198
2003	7.39482413715473
2004	13.4044993366293
2005	11.7087162790883
2006	14.0707408828954
2007	15.0193624835049
2008	9.74841492016644
2009	12.8763714245655
2010	12.5144509639067
2011	22.4267286084016
2012	17.403561471046
2013	10.7321928350083
2014	20.3121425187007
2015	19.2874132563283
2016	17.1399644809544
2017	15.1180427594742
2018	15.598826082601
2019	17.3016208859694
2020	16.2000000444534
2021	17.2544122289578