| Year | Number of a married woman included in the survey | Number of a woman using any contraceptive method during the survey time | Number of sterilized woman | Percentage of sterilized of the married woman |
| 2004 | 11440 | 6157 | 642 | 5.61 |
| 2007 | 10996 | 5628 | 598 | 5.44 |
| 2011 | 16635 | 10183 | 1032 | 6.20 |
| 2014 | 16858 | 10528 | 885 | 5.25 |