| Country or Area | Year | Value | |
|---|
| Afghanistan | 2023 | 1 |
| Afghanistan | 2022 | 1 |
| Afghanistan | 2020 | 1.5 |
| Afghanistan | 2019 | 1.5 |
| Afghanistan | 2018 | 1.5 |
| Afghanistan | 2017 | 1.5 |
| Afghanistan | 2016 | 1.5 |
| Afghanistan | 2015 | 1.5 |
| Afghanistan | 2014 | 1.5 |
| Afghanistan | 2013 | 1.5 |
| Afghanistan | 2012 | 2 |
| Afghanistan | 2011 | 2 |
| Afghanistan | 2010 | 2 |
| Afghanistan | 2009 | 2 |
| Afghanistan | 2008 | 2 |
| Afghanistan | 2007 | 2 |
| Afghanistan | 2006 | 2 |
| Africa Eastern and Southern | 2023 | 3.236842105263158 |
| Africa Eastern and Southern | 2022 | 3.236842105263158 |
| Africa Eastern and Southern | 2021 | 3.210526315789474 |
| Africa Eastern and Southern | 2020 | 3.236842105263158 |
| Africa Eastern and Southern | 2019 | 3.236842105263158 |
| Africa Eastern and Southern | 2018 | 3.3055555555555554 |
| Africa Eastern and Southern | 2017 | 3.1842105263157894 |
| Africa Eastern and Southern | 2016 | 3.2777777777777777 |
| Africa Eastern and Southern | 2015 | 3.361111111111111 |
| Africa Eastern and Southern | 2014 | 3.3055555555555554 |
| Africa Eastern and Southern | 2013 | 3.236842105263158 |
| Africa Eastern and Southern | 2012 | 3.236842105263158 |
| Africa Eastern and Southern | 2011 | 3.3055555555555554 |
| Africa Eastern and Southern | 2010 | 3.3333333333333335 |
| Africa Eastern and Southern | 2009 | 3.25 |
| Africa Eastern and Southern | 2008 | 3.25 |
| Africa Eastern and Southern | 2007 | 3.2777777777777777 |
| Africa Eastern and Southern | 2006 | 3.25 |
| Africa Eastern and Southern | 2005 | 3.25 |
| Africa Western and Central | 2023 | 3.275 |
| Africa Western and Central | 2022 | 3.225 |
| Africa Western and Central | 2021 | 3.175 |
| Africa Western and Central | 2020 | 3.15 |
| Africa Western and Central | 2019 | 3.1 |
| Africa Western and Central | 2018 | 3.075 |
| Africa Western and Central | 2017 | 3.075 |
| Africa Western and Central | 2016 | 3.075 |
| Africa Western and Central | 2015 | 3.075 |
| Africa Western and Central | 2014 | 3.175 |
| Africa Western and Central | 2013 | 3.175 |
| Africa Western and Central | 2012 | 3.15 |
| Africa Western and Central | 2011 | 3.175 |
| Africa Western and Central | 2010 | 3.175 |
