Year	% of central government expense
2005	12.574721293189855
2006	9.90249759249939
2007	8.454192904862733
2008	6.978057087424422
2009	6.828224405046488
2010	6.8654858100788845
2011	6.3221647691502385
2012	5.1602818358430795
2013	6.438033580248459
2014	6.574916172426762
2015	7.39534593758121
2016	5.677629148760786
2017	4.736849389405663
2018	4.822734539285972
2019	3.734696073693853
2020	6.548776334805276
2021	7.248209517181194