Year	% of total expenditure in secondary public institutions
1999	92.8358535766602
2000	93.1107788085938
2001	91.8836135864258
2002	90.6437377929688
2003	89.8664398193359
2004	90.2435073852539
2005	91.6576766967773
2006	90.3369598388672
2007	90.7897109985352
2008	91.514289855957
2009	92.1728286743164
2010	91.6935272216797
2011	90.5126495361328
2012	92.1255264282227
2013	92.3727035522461
2014	92.2959365844727
2015	89.6261596679688
2016	89.197868347168
2017	89.3897399902344
2018	89.8074111938477
2019	87.9585876464844
2020	86.1494064331055