Year 2018 | Year 2017 | Year 2016 | Year 2015 | Year 2014 | Year 2013 | Year 2012 | |
---|---|---|---|---|---|---|---|

1 | 15.0 | 16.8 | 0 | 0 | 0 | 0 | 0 |

2 | 61.5 | 65.6 | 0 | 0 | 0 | 0 | 0 |

3 | 10.1 | 8.5 | 0 | 0 | 0 | 0 | 0 |

4 | 9.4 | 7.2 | 0 | 0 | 0 | 0 | 0 |

5 | 3.1 | 1.7 | 0 | 0 | 0 | 0 | 0 |

- Never (value when calculating levels: -2.0)
- In some lessons (value when calculating levels: -1.0)
- In about half of lessons (value when calculating levels: 0.0)
- In most of lessons (value when calculating levels: 1.0)
- In almost every lesson (value when calculating levels: 2.0)