9.—(1) Subject to paragraphs 10 to 12, the additional contributions consist of a lump sum of AxBxC, where–
A is the length of the past period, expressed in years and any fraction of a year,
B is the annual rate of the teacher’s contributable salary at the date on which notice of the election was given, and
C is the percentage ascertained from Table 3 below.
TABLE 3
| Age on date of election | Percentage |
|---|---|
| under 23 | 29.53 |
| 23 | 28.50 |
| 24 | 27.47 |
| 25 | 26.45 |
| 26 | 25.43 |
| 27 | 24.54 |
| 28 | 23.77 |
| 29 | 23.12 |
| 30 | 22.57 |
| 31 | 22.10 |
| 32 | 21.67 |
| 33 | 21.27 |
| 34 | 20.92 |
| 35 | 20.62 |
| 36 | 20.37 |
| 37 | 20.19 |
| 38 | 20.05 |
| 39 | 19.97 |
| 40 | 19.91 |
| 41 | 19.86 |
| 42 | 19.84 |
| 43 | 19.86 |
| 44 | 19.89 |
| 45 | 19.92 |
| 46 | 19.96 |
| 47 | 20.02 |
| 48 | 20.11 |
| 49 | 20.22 |
| 50 | 20.36 |
| 51 | 20.52 |
| 52 | 20.69 |
| 53 | 20.86 |
| 54 | 21.04 |
| 55 | 21.22 |
| 56 | 21.52 |
| 57 | 22.02 |
| 58 | 22.72 |
| 59 | 23.52 |
| 60 | 24.39 |
| 61 | 23.88 |
| 62 | 23.37 |
| 63 | 22.86 |
| 64 | 22.34 |
| 65 | 21.81 |
| 66 | 21.29 |
| 67 | 20.76 |
| 68 | 20.24 |
| 69 | 19.71 |
(2) If the lump sum is not paid within one month after the date on which the election became irrevocable under regulation C3(13), the election ceases to have effect.