Year	current international $
2008	3040.6869491813623
2009	3150.0368268623465
2010	3303.1660571735893
2011	3438.4277207913165
2012	3567.846099916464
2013	3723.1979310717143
2014	4022.9930437732105
2015	4014.432469744387
2016	3979.757115048803
2017	4015.580186767074
2018	4140.938693287138
2019	4398.642527927401
2020	4421.156379109979
2021	4613.383746921196
2022	4979.9017366811595
2023	5239.787316247158