Year	current international $
2000	39.8513179068866
2001	40.7953735795351
2002	45.5677021906994
2003	51.6660285210579
2004	57.7354155853757
2005	34.9357413967204
2006	34.8408756041969
2007	38.4554371956743
2008	38.2232729602733
2009	46.1939218125703
2010	52.6308403668575
2011	57.8485570961083
2012	62.4794248055453
2013	67.3518150721412
2014	63.5111725553185
2015	67.1561084181858
2016	68.0497475778102
2017	66.3512891197622
2018	73.8889702466067
2019	78.363373967821
2020	76.4515896328473
2021	79.0485717267512