Year	current international $
2000	34.6468033228065
2001	36.1418143872177
2002	39.5743499249944
2003	37.953759617285
2004	43.3605999613118
2005	42.845394195569
2006	37.6327514106758
2007	39.1941198721839
2008	37.8328553863327
2009	41.1735923286613
2010	38.9832700056059
2011	39.2396438574161
2012	37.486084001293
2013	38.2361792808859
2014	49.6117055490787
2015	51.2907299301874
2016	54.9232945308562
2017	60.2825682818928
2018	63.498964790159
2019	64.2231279860745
2020	60.8744385907515
2021	58.475087535664