Year	% of central government expense
1972	25.8125810606344
1973	22.851081685992938
1974	22.672648065192803
1975	21.012616238096065
1976	20.391382178935533
1977	18.23452963797051
1978	19.177960151380233
1979	10.301455698169965
1980	10.444100640360455
1981	10.912214717142335
1982	8.343584738491645
1983	7.889182756745289
1984	6.890661161608453
1985	6.3172972862060295
1986	7.821682610834905
1987	9.563979641139685
1988	10.198731941149399
1989	8.69426617571643
1990	10.501784802831343
1991	9.208052862873691
1992	9.052686936974595
1993	5.8543792439941065
1994	2.4129585466663284
1995	1.4735516373757953
1996	2.311746063502659
1997	3.745452293639797
1998	2.77915629781822
1999	4.429619595117337
2000	4.1474485335308025
2001	6.683395403263033
2002	3.6589584416080956
2003	4.331232571077559
2004	4.151515226262543
2005	4.364589472486947
2006	4.9155735476158595
2007	3.2264189662552534
2008	3.1071541343252664
2009	4.10924549930808
2010	4.4529154859640805
2011	5.8430328397051765
2012	6.398598312577593