| 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | |
|---|---|---|---|---|---|---|
| Ashanti | 1.3 | 0.6 | 0.4 | 0.4 | 0.4 | 0.2 |
| Upper East | 2.2 | 1.6 | 1.2 | 1.0 | 0.9 | 0.6 |
| Upper West | 2.5 | 1.3 | 1.6 | 1.4 | 1.1 | 0.7 |
| Western | 2.9 | 1.2 | 0.8 | 0.8 | 0.6 | 0.4 |
| Eastern | 1.2 | 0.8 | 0.5 | 0.5 | 0.5 | 0.3 |
| Volta | 4.4 | 1.8 | 0.4 | 1.3 | 0.9 | 0.6 |
| Brong Ahafo | 1.6 | 1.4 | 1.3 | 1.0 | 0.5 | 0.3 |
| Central | 4.1 | 2.8 | 3.0 | 1.9 | 1.7 | 1.4 |
| Northern | 2.6 | 2.0 | 1.5 | 1.0 | 0.9 | 0.9 |
| Greater Accra | 2.0 | 2.3 | 1.1 | 0.9 | 0.9 | 0.6 |