Year	current international $
2000	20.9407696541183
2001	21.4816052725998
2002	23.3254870094585
2003	22.747260396934
2004	20.7930843937675
2005	37.2983665153176
2006	52.212616808955
2007	54.2160781557998
2008	55.7295909329124
2009	52.1142416285871
2010	54.886071140321
2011	59.0600463866052
2012	53.4739257901778
2013	60.1538198962175
2014	57.1056759249495
2015	48.4715255006528
2016	47.5514850032681
2017	36.5789977817124
2018	37.6755351742923
2019	40.4386276123266
2020	39.2374708599166
2021	41.6344472256779