Year	% of central government expense
1999	32.0492913180398
2000	15.163630249184926
2001	10.90412246105725
2002	12.823151748552137
2003	10.695536979685626
2004	30.099798648870024
2005	5.38587491467953
2006	1.6402036717105166
2007	1.618123129494015
2008	1.7487011994808648
2009	1.2192749369225335
2010	1.0941256753846327
2011	0.6471065109339982
2012	0.8112709803790052
2013	0.764869628667379
2014	0.619018545246293
2015	2.017271752016343
2016	2.235092807142074
2017	1.8163633533408594
2018	1.3115714591866052
2019	0.17684914267736307