Year	% of total expenditure in primary public institutions
1998	91.93585968017581
1999	93.1401901245117
2000	93.7618103027344
2001	91.59528350830075
2002	90.0567092895508
2003	91.06352996826169
2004	92.22151565551755
2005	92.162109375
2006	91.7790412902832
2007	92.4227523803711
2008	91.7878189086914
2009	92.9442672729492
2010	90.7266464233398
2011	92.3589401245117
2012	93.2532806396484
2013	91.9497222900391
2014	93.7736587524414
2015	94.0776214599609
2016	92.6312370300293
2017	92.866569519043
2018	91.1173477172852
2019	91.653938293457
2020	90.26922607421875