Year	current international $
2000	25.7892780571091
2001	28.627965154872
2002	46.4912937647399
2003	29.0164939342434
2004	40.9163317717044
2005	42.625813434865
2006	48.5608506066791
2007	45.3683224301358
2008	45.5891253756038
2009	47.7217754250572
2010	50.2955144885693
2011	42.9181480138974
2012	39.8703213763353
2013	37.5412879295148
2014	40.0032971770063
2015	46.6096777267705
2016	43.819214022968
2017	44.3237772207352
2018	46.2293123738418
2019	46.2394196955244
2020	52.7793436274874
2021	47.8393352525029