Year	% of GDP
2013	14.652741740842067
2014	18.33534559222441
2015	19.309513605390844
2016	19.25456085584559
2017	19.564790304410703
2018	19.770888746381694
2019	20.52041414769684
2020	22.25947744540171
2021	22.735299001023872
2022	23.582851960183767
2023	22.26898931893104