Year	% of central government expense
1998	50.184185708688034
1999	114.17241069897352
2001	98.8506267024974
2002	136.4019134459885
2003	99.83280352420194
2004	103.97330891630645
2005	71.01817549892232
2006	80.96237173513032
2007	45.10215738259913
2008	35.99244808293614
2009	55.2603648431645
2010	30.925153500782603
2011	30.390672692817954
2012	22.701336599742206
2013	22.879493570341754
2014	18.147966731261683
2015	16.155666505203165
2016	20.578284621873326
2017	19.22101205229424
2018	18.90452563741366
2019	18.520860135985657
2020	22.07974008710084
2021	19.581601840617793