| Year | Number of Staff | Total Number of Fillings | Mean per Person per Year |
| 1974 | 1.356 | 2.589.019 | 1.909 |
| 1975 | 1.371 | 2.248.326 | 1.640 |
| 1976 | 1.319 | 2.202.169 | 1.670 |