Year	current international $
2000	13.7412413882289
2001	13.9906124178375
2002	14.9071728210371
2003	14.4581228898302
2004	15.5004792676237
2005	16.8187988892217
2006	20.6021550079491
2007	23.0310185543866
2008	20.7635444722038
2009	20.2572115287222
2010	20.0452393632925
2011	16.5747915783604
2012	12.615209293798
2013	12.5372837264729
2014	16.2933777779539
2015	15.6493122641253
2016	15.3560232566766
2017	15.1363517860713
2018	14.9944891822241
2019	15.2897424401076
2020	16.4520654015318
2021	17.8795360240224