the highest = the best
| 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Botswana | 55.05 | 55.28 | 56.33 | 56.60 | 56.38 | 57.24 | 56.80 | 57.19 | 56.73 | 56.96 | 56.97 | 57.15 |
| South Africa | 55.49 | 55.63 | 56.06 | 56.45 | 56.89 | 57.51 | 58.35 | 57.73 | 56.85 | 56.42 | 56.19 | 56.69 |
| Namibia | 54.76 | 55.17 | 54.87 | 55.12 | 55.39 | 55.02 | 55.33 | 56.24 | 56.36 | 56.24 | 55.99 | 55.87 |
| इस्वातिनी | 42.98 | 42.90 | 43.17 | 43.58 | 44.30 | 44.74 | 44.68 | 45.16 | 45.66 | 45.95 | 46.01 | 46.32 |
| Lesotho | 43.73 | 43.70 | 43.30 | 43.86 | 44.04 | 44.56 | 44.32 | 44.68 | 44.22 | 44.95 | 44.79 | 44.80 |