Year	current international $
2000	16.4638131084345
2001	17.3505546112458
2002	18.3278183205001
2003	19.0371694315682
2004	20.5258457729715
2005	22.2306029247107
2006	22.8080894762539
2007	24.8767888664328
2008	24.6004775280991
2009	25.4155614700877
2010	27.3451219713163
2011	27.3462889053853
2012	26.7167960128279
2013	28.4841942131996
2014	29.717595514239
2015	30.9685092810499
2016	30.5561571960264
2017	33.1262278172502
2018	35.1774904626952
2019	40.8131122418389
2020	40.9196490466771
2021	44.2880465297375