| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | currently using | 1869 |
16.1%
|
| 2 | used since last birth | 1972 |
17%
|
| 3 | used before last birth | 1135 |
9.8%
|
| 4 | never used | 6652 |
57.2%
|