Year	constant 2021 international $
2013	4506.221905395174
2014	4739.881344579967
2015	5009.635364766214
2016	5277.32634410947
2017	5474.565469887967
2018	5643.898574475587
2019	5863.701851761061
2020	5852.813398077377
2021	6032.27795593735
2022	6171.827691432793
2023	6493.487743562707