Year	current international $
2000	1.18544050458335
2001	6.09469733471438
2002	7.69506124292045
2003	6.40532818450673
2004	7.68164716375588
2005	10.9340224239834
2006	12.4104827603047
2007	9.73692259113454
2008	14.6050995380177
2009	16.2510454565162
2010	20.4110023863834
2011	22.82650980693
2012	21.3575590156643
2013	18.5983260225566
2014	18.5678267468253
2015	15.061760121767
2016	22.2543681177788
2017	19.5712069967198
2018	29.0907678368687
2019	24.2870275763294
2020	24.9530937676664
2021	31.1722517523707