| 2005 | 2010 | 2011 | 2012 | 2013 | |
|---|---|---|---|---|---|
| Donga | 101.17 | 102.21 | 102.34 | 102.45 | 102.57 |
| Borgou | 100.32 | 101.42 | 101.61 | 101.79 | 101.98 |
| Alibori | 100.07 | 101.08 | 101.22 | 101.37 | 101.54 |
| Littoral | 95.49 | 97.72 | 98.24 | 98.78 | 99.25 |
| Atacora | 97.51 | 98.08 | 98.16 | 98.25 | 98.36 |
| Collines | 95.96 | 96.93 | 97.06 | 97.19 | 97.32 |
| Atlantique | 95.13 | 96.28 | 96.47 | 96.66 | 96.85 |
| Mono | 95.33 | 96.22 | 96.33 | 96.41 | 96.49 |
| Oueme | 92.46 | 93.76 | 93.98 | 94.17 | 94.32 |
| Plateau | 90.89 | 91.83 | 91.98 | 92.10 | 92.20 |
| Zou | 89.53 | 90.32 | 90.44 | 90.55 | 90.67 |
| Couffo | 87.49 | 88.17 | 88.25 | 88.32 | 88.39 |