Year	current international $
2000	8.52345245671317
2001	9.16047683675092
2002	9.93525482383548
2003	8.86190667677405
2004	9.71903595849774
2005	16.8818044370229
2006	19.0636443518991
2007	14.2072683239036
2008	15.5298307367796
2009	15.2264871415961
2010	13.7551327827423
2011	13.4321968406156
2012	11.9164595844366
2013	14.96320772943
2014	14.4444940953888
2015	12.6508684076372
2016	12.5607126631367
2017	21.7917634302144
2018	21.5835612486107
2019	25.6603535040826
2020	29.6393933207005
2021	27.6630045214457