Year	current international $
2000	5.42300191604124
2001	7.30817009125426
2002	7.09785360999292
2003	7.50670352554025
2004	7.70604962868295
2005	10.4757508679111
2006	9.23222533022096
2007	10.1948588001545
2008	11.1259705497591
2009	12.2531787462051
2010	12.5009085755214
2011	13.2911833803517
2012	13.258123063298
2013	16.6774479805446
2014	20.0169399921305
2015	23.6168439592644
2016	23.8723307377623
2017	22.4334653120483
2018	23.9213232367315
2019	24.6536160347859
2020	31.4544149800141
2021	34.6423541691489