Year	% of central government expense
2005	14.748795665286469
2006	12.275819802783737
2007	9.673469719217668
2008	6.202560596267616
2009	5.679093637383673
2010	7.599132901517332
2011	8.805216096524129
2012	8.447581443749923
2013	7.673061913808792
2014	8.50068268086686
2015	5.955703090407136
2016	7.467715133211178
2017	7.0931348134267
2018	5.03858516308701
2019	6.602652442043524
2020	5.653431635419618
2021	6.839756311033887
2022	3.4620220861891697