Year	current international $
2000	8.64764718794248
2001	9.24316293070143
2002	10.3436384915077
2003	10.2125566446421
2004	18.4128473044258
2005	14.3851149533067
2006	17.8711013088164
2007	18.55275362244
2008	18.461767033203
2009	22.4085655461593
2010	19.0012922873646
2011	20.68854853525
2012	16.692090203214
2013	26.2705538829688
2014	26.6466695741212
2015	24.1423675822625
2016	43.7609540745533
2017	51.8769433699639
2018	44.6864228478964
2019	48.9087982379519
2020	62.4020505715669
2021	65.3859631763778