Year	current international $
2000	41.5201856588035
2001	38.709591153983
2002	39.5686010222723
2003	42.707071576063
2004	40.4655294885891
2005	43.9126975826122
2006	47.9055186474477
2007	51.2823591040552
2008	52.4364959541994
2009	54.2610423482342
2010	45.5983691777668
2011	35.4697954410071
2012	28.6527638658557
2013	24.2291466134071
2014	27.7864171490168
2015	27.4946307251608
2016	28.3726902616971
2017	29.6780660827469
2018	27.1905151237115
2019	27.5248373562457
2020	35.1384543981502
2021	36.4696631877854