Year	current international $
2000	31.561293379897137
2001	32.36910878190471
2002	35.559664866903034
2003	37.22350792031776
2004	38.573335428113246
2005	40.10669997644636
2006	44.16648694919249
2007	46.673424776871606
2008	48.07308653432957
2009	48.867056002359085
2010	49.29642672732434
2011	50.357831176685714
2012	51.31557408803195
2013	57.17844037002334
2014	58.9891596896996
2015	61.75139406891077
2016	64.79442855845551
2017	62.85672648567388
2018	60.6740191898659
2019	63.73706210138229
2020	62.05723499885159
2021	65.32380630731085