Year	% of central government expense
1995	29.152087111951996
1996	33.604833502321
1997	29.11614880603135
1998	35.146076984265655
2002	28.466980725879665
2003	27.181333206883178
2004	18.37608890608397
2011	12.793013543448925
2012	12.318234947107774
2013	8.746176801596588
2014	8.717436501492195
2015	12.04030638541208
2016	6.019238062092451
2017	5.417547892158098
2018	9.769689287433122
2019	0.7591939843623455
2020	8.25517373682813
2021	14.397534354972711