Year	current international $
2008	6343.8034073459385
2009	6726.323128505802
2010	7163.923662294814
2011	7744.539760862733
2012	7897.654333464183
2013	8090.768292791644
2014	8200.551107809912
2015	8715.299802949708
2016	9157.10297369035
2017	9381.023877919974
2018	10018.744283075477
2019	10861.132103228272
2020	10532.611374878798
2021	12362.704807862478
2022	13939.456503042724
2023	15029.349098035384