Year,Pupil-teacher ratio primary
1970,46.48
1971,42.98
1972,47.01
1973,50.04
1974,51.56
1975,50.69
1976,50.3
1977,47.18
1978,44.16
1979,43.92
1980,53.56
1981,55.27
1983,51.4
1984,46.95
1985,46.97
1986,47.84
1987,48.08
1988,57.87
1989,60.39
1990,63
2005,47.04
2006,47.54
2007,44.75
2008,43.73
2009,45.76
2010,42.97
2017,30.05
2018,30.05