Pupil-teacher ratio. Pre-primary is the number of pupils enrolled in pre-primary divided by the number of pre-primary school teachers.
| Data | Valor | Modificar, % |
|---|---|---|
| 2013 | 20,3 | -1,19% |
| 2012 | 20,6 | 2,60% |
| 2011 | 20,1 | -1,42% |
| 2010 | 20,3 | 8,94% |
| 2009 | 18,7 | 3,17% |
| 2008 | 18,1 | -1,28% |
| 2007 | 18,3 | -1,11% |
| 2006 | 18,5 | 0,26% |
| 2005 | 18,5 | 2,61% |
| 2004 | 18,0 | 0,25% |
| 2003 | 18,0 | -1,04% |
| 2002 | 18,2 |