Year	current international $
2000	44.4556987894162
2001	43.2577142904885
2002	40.6639060347219
2003	35.9635356305151
2004	31.0190945006716
2005	31.4433590333559
2006	30.8279919095453
2007	31.137428053928
2008	22.9314740062475
2009	29.24136684435
2010	30.3232325038015
2011	30.6687301793196
2012	32.8015431554784
2013	36.3364044812188
2014	41.7485216411514
2015	29.7994683108978
2016	36.3324995479762
2017	27.6117796825318
2018	35.5626804203714
2019	37.6887785282073
2020	35.4475380575485
2021	39.4798688153456