Year	current international $
2000	30.8247583857958
2001	31.4199506473093
2002	32.0955397154231
2003	33.6755299201638
2004	33.8425941373469
2005	33.8863621184019
2006	35.2247854040841
2007	38.7600206429091
2008	39.3100752500915
2009	42.3602771549821
2010	45.8896733497859
2011	49.4782133127793
2012	50.3398328555217
2013	52.8879229110888
2014	57.659650801463
2015	59.9211782298741
2016	88.1712396534797
2017	88.189985571678
2018	92.9153316846115
2019	94.1248051607435
2020	92.3671866350375
2021	95.9638632763834