Year	current international $
2008	2854.099013888156
2009	2912.513419303161
2010	3025.027371258009
2011	3133.9639308483047
2012	3229.1489954258236
2013	3353.936102413423
2014	3501.7895339511006
2015	3344.9574533243363
2016	3373.6232487447014
2017	3447.3771438476206
2018	3622.822855730574
2019	3783.695846351645
2020	3669.592665635261
2021	3918.532315154857
2022	4242.789179249726
2023	4404.089840084976