Year	current international $
2000	35.8897111298216
2001	36.8379807079182
2002	37.4209022492541
2003	36.8792329447188
2004	35.8824535718187
2005	36.8251234088913
2006	38.0977910948405
2007	37.5256853594274
2008	32.8271292609667
2009	31.6031765660611
2010	30.030649962571
2011	30.0259793357913
2012	28.7957702771286
2013	27.2510592046808
2014	27.6787529936257
2015	27.9821899150402
2016	28.6978916826681
2017	30.4502276662294
2018	33.8852941810076
2019	35.6080733012361
2020	30.3875715959992
2021	32.3230362476139