Year	current international $
2000	3.85841763707455
2001	3.86700932274552
2002	3.79814116135513
2003	35.982995116592
2004	37.0594091856692
2005	85.2446702351873
2006	50.2408693458726
2007	61.3466728614
2008	72.9705009307045
2009	76.7374660794907
2010	76.0708772459283
2011	74.8749999502338
2012	69.7610908224292
2013	74.064146935331
2014	18.4786190363156
2015	18.3035956275379
2016	22.6187073388345
2017	12.0900279466196
2018	13.1733765974861
2019	13.3669207563007
2020	15.4424714237872
2021	17.2069293074955