Year	current international $
2000	44.4556987894162
2001	43.2577173185284
2002	40.6647222557356
2003	35.9635356305151
2004	31.0190977483655
2005	31.4433559964846
2006	31.0518598298686
2007	31.1374254503272
2008	22.9314756715945
2009	29.2413647048083
2010	30.3232313770964
2011	30.6687304973923
2012	32.8015435634189
2013	36.3364020637692
2014	41.7485210222168
2015	29.7994665140828
2016	36.3325020693386
2017	27.6117774286436
2018	35.5626803375777
2019	37.6887793744628
2020	35.447540237873
2021	39.4798680328972