Year,Pupil-teacher ratio secondary
1973,24.07
1979,22.34
1980,23.76
1983,25.97
1985,27.73
1986,28.91
1987,29.09
1988,26.77
1989,26.12
1990,27.44
1998,36.31
1999,37.41
2000,38.43
2001,37.5
2002,34.37
2003,31.08
2004,27.37
2005,23.92
2006,25.05
2007,25.24
2008,27.07
2009,28.16
2010,28.33
2011,30.62
2012,32.24
2013,35.2
2016,36.19
2017,33.98
2018,35.1