Year	% of central government expense
2001	21.662456375812578
2002	18.706460596358916
2003	27.61491004895951
2004	28.704494547391153
2005	22.124479622456548
2006	17.175763611196977
2007	12.875779437902487
2008	13.220795686969913
2009	9.675540421058772
2010	12.426180684474323
2011	11.354843433926519
2012	16.764068654141667
2013	18.46762217639162
2014	14.743518182746273
2015	14.753668819585725
2016	12.145494628561497
2017	16.85221434465535
2018	12.642572052254758
2019	15.080334035973209
2020	17.637817951589707
2021	14.686550750709976