Year	% of GDP
2012	69.3990692942758
2013	68.2067944959571
2014	66.8789341089706
2015	63.1645690063694
2016	58.8918815008119
2017	55.844692320326
2018	54.104303391
2019	52.5829029930867
2020	58.8822415514734
2021	52.4195040350945
2022	49.9814883187006
2023	48.088367290439