| 2000 | 2004 | 2012 | |||||||
| Variable | Mean | Standard Devia tion | No. of Observations | Mean | Standard Deviation | No. of Observations | Mean | Standard Deviation | No. of Observations |
| Total Teachers | 18.5 | 11.9 | 174 | 16.9 | 8.2 | 173 | 17.7 | 19.9 | 181 |
| Male Teachers | 8.0 | 4.6 | 174 | 8.0 | 4.5 | 173 | 8.7 | 14.8 | 181 |
| Female Teachers | 10.5 | 10.1 | 174 | 8.9 | 7.7 | 173 | 9.0 | 9.2 | 181 |