Year	% of central government expense
2004	42.23260628851921
2005	19.411627950730228
2006	19.67355643730429
2007	16.960731817373418
2008	9.217469785827085
2009	13.428226722951543
2010	15.041171020217908
2011	16.42685793714114
2012	11.920331042034418
2013	11.136063341394697
2014	9.603069284350992
2015	13.129476901984052
2016	12.038405205265642
2017	9.872607112061829
2018	5.156497962389659
2019	14.08203186216439
2020	3.7668961662715184
2021	4.6733968529187475
2022	7.273109494274789