Year	current international $
2000	7.35607289434135
2001	7.60048550828618
2002	6.69088179650096
2003	9.26086840498271
2004	9.51685808167067
2005	9.80766478280829
2006	10.0291508034933
2007	9.99255756181076
2008	10.0823545730023
2009	10.5584903162627
2010	11.3291750219013
2011	11.3989313617375
2012	11.8214047195292
2013	11.9216923112967
2014	12.3776735695935
2015	12.5467005620816
2016	12.6856409327598
2017	12.3808937748684
2018	12.122783744545
2019	11.7175945569001
2020	14.3707066973909
2021	13.6114945366944