Year	% of central government expense
1990	44.1564111189459
1991	28.87842469690748
1992	27.716561967507307
1993	28.15766901421152
1994	26.246332218818953
1995	16.283222507431304
1996	17.530186585736196
1997	10.896401463744896
1998	10.962710520852328
1999	32.54924551392366
2000	10.861852445954916
2001	13.304543167959181
2002	13.21844830107485
2003	5.980666743001511
2004	2.490734026500348
2005	4.271736474333607
2006	2.4905597215836126
2007	6.951057010309156
2008	7.374089350241905
2009	7.844321243826618
2010	7.016282635263342
2011	5.757759814763676
2012	7.4611564687055765
2013	13.354760698708368
2014	9.036202253660594
2015	6.252417334028565
2016	7.338390767223789
2017	6.754673683438446