Year	current international $
2000	14.858988718669629
2001	19.695500806240887
2002	16.327615455615526
2003	23.184968923259405
2004	29.030976502914537
2005	30.954997616477094
2006	28.410499320047254
2007	27.267631723375406
2008	26.785789343241753
2009	28.106018942539194
2010	25.72183292521512
2011	28.02663960084874
2012	29.69120085610547
2013	29.62777147856113
2014	28.520816372475934
2015	31.545595619778826
2016	28.859732649196967
2017	31.408098760263485
2018	32.154438338725065
2019	35.779614574393165
2020	39.88663387594359
2021	40.86201398380387