Year	constant 2021 international $
2012	28139.409861715838
2013	28550.58521286774
2014	28371.756670615767
2015	27804.264288856277
2016	27075.101811878016
2017	27528.68661247274
2018	28215.309030762244
2019	28665.91086846218
2020	28078.659045426924
2021	29178.32987932371
2022	28605.13959472848