Year	% of central government expense
1988	19.74806579199851
1989	24.233336829664772
1990	26.118305395379167
1991	18.6779139967056
1992	17.291369472662055
1993	10.32585743398517
1994	11.63562010493031
1995	9.054833975533981
1996	3.607047837114622
1997	3.745016324219265
1998	0.9963123160652025
1999	-0.7220635629819656
2000	0.6341447442339057
2001	2.383473731912939
2002	0.9790921231409729
2003	0.35161534226485025
2004	2.8181346842511465
2005	1.4173113712211367
2006	1.1918539443718064
2007	0.8662773551570576
2008	2.106801540594923
2009	3.458136480306441
2010	3.6927800220977773
2011	1.007229546180257
2012	0.6888451057682058
2013	2.0062596618014976
2014	2.6892600193863045
2015	1.6144523235322525
2016	0.7279575206320464
2017	1.5588938141711322
2018	2.4010521745992506
2019	3.0658295560375843
2020	1.6229822855981555