| Country or Area | Year | Value | |
|---|
| Afghanistan | 2022 | 1.5 |
| Afghanistan | 2020 | 2.5 |
| Afghanistan | 2019 | 2.5 |
| Afghanistan | 2018 | 2.5 |
| Afghanistan | 2017 | 2.5 |
| Afghanistan | 2016 | 2.5 |
| Afghanistan | 2015 | 3 |
| Afghanistan | 2014 | 3 |
| Afghanistan | 2013 | 2.5 |
| Afghanistan | 2012 | 2.5 |
| Afghanistan | 2011 | 2.5 |
| Afghanistan | 2010 | 2.5 |
| Afghanistan | 2009 | 3.5 |
| Afghanistan | 2008 | 3 |
| Afghanistan | 2007 | 3 |
| Afghanistan | 2006 | 3 |
| Africa Eastern and Southern | 2022 | 2.8421052631578947 |
| Africa Eastern and Southern | 2021 | 2.8421052631578947 |
| Africa Eastern and Southern | 2020 | 2.8947368421052633 |
| Africa Eastern and Southern | 2019 | 2.8947368421052633 |
| Africa Eastern and Southern | 2018 | 2.9444444444444446 |
| Africa Eastern and Southern | 2017 | 2.9473684210526314 |
| Africa Eastern and Southern | 2016 | 3.0555555555555554 |
| Africa Eastern and Southern | 2015 | 3.138888888888889 |
| Africa Eastern and Southern | 2014 | 3.2222222222222223 |
| Africa Eastern and Southern | 2013 | 3.1052631578947367 |
| Africa Eastern and Southern | 2012 | 3.1052631578947367 |
| Africa Eastern and Southern | 2011 | 3.1666666666666665 |
| Africa Eastern and Southern | 2010 | 3.111111111111111 |
| Africa Eastern and Southern | 2009 | 3.0833333333333335 |
| Africa Eastern and Southern | 2008 | 3.138888888888889 |
| Africa Eastern and Southern | 2007 | 3.111111111111111 |
| Africa Eastern and Southern | 2006 | 3 |
| Africa Eastern and Southern | 2005 | 2.9722222222222223 |
| Africa Western and Central | 2022 | 3.325 |
| Africa Western and Central | 2021 | 3.25 |
| Africa Western and Central | 2020 | 3.25 |
| Africa Western and Central | 2019 | 3.2 |
| Africa Western and Central | 2018 | 3.175 |
| Africa Western and Central | 2017 | 3.2 |
| Africa Western and Central | 2016 | 3.35 |
| Africa Western and Central | 2015 | 3.425 |
| Africa Western and Central | 2014 | 3.45 |
| Africa Western and Central | 2013 | 3.45 |
| Africa Western and Central | 2012 | 3.4 |
| Africa Western and Central | 2011 | 3.325 |
| Africa Western and Central | 2010 | 3.275 |
| Africa Western and Central | 2009 | 3.225 |
| Africa Western and Central | 2008 | 3.210526315789474 |
| Africa Western and Central | 2007 | 3.1315789473684212 |
