Year	current international $
2000	10.430863399043
2001	9.13761445704556
2002	8.39719654468451
2003	22.8295605093707
2004	29.5982024343353
2005	35.5963621241237
2006	43.628813468588
2007	47.021908756659
2008	47.8411844082177
2009	51.3098349884347
2010	55.2041598495265
2011	55.3910342527773
2012	62.6445232389389
2013	45.0761974323603
2014	54.759582015604
2015	49.4756084908326
2016	55.4392600314917
2017	48.6360918123506
2018	55.0833690675228
2019	48.3620941782114
2020	58.3413540798355
2021	64.573088850703