Year	% of central government expense
2000	8.127386987166132
2001	10.996057020085361
2002	22.166460531041064
2003	9.004108801352178
2004	-11.931176503824735
2005	6.005452512536364
2006	10.381703137938915
2007	8.770821118674732
2008	6.726421146009827
2009	15.739180333010388
2010	15.36348080736788
2011	12.785562088980543
2012	8.761877448421068
2013	8.075061145536756
2014	5.919112439289352
2015	4.184160804800079
2016	4.485519363407473
2017	4.369869965588083