Year	constant 2021 international $
2012	27600.267740907868
2013	27970.02341134282
2014	28030.246338366378
2015	27784.066776511125
2016	27345.90178915353
2017	28034.38522862011
2018	28918.890196338016
2019	29541.580801547934
2020	28896.34304752524
2021	30213.934468182615
2022	30319.22269460191
2023	31317.76000432768