| 1990 | 2000 | 2005 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ботсвана | 1 218 | 2 672 | 5 | 853 | 8 | 7 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 5 | 0 | 1 | 63 |
| Eswatini | 1 465 | 10 | 0 | 313 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 29 | 64 | 3 |
| Лесото | 2 195 | 660 | 2 488 | 172 | 179 | 516 | 0 | 0 | 0 | 0 | 7 | 464 | 39 | 368 | 3 | 17 | |
| Южная Африка | 10 624 | 1 459 | 615 | 12 499 | 92 | 32 | 25 | 66 | 17 | 18 | 210 | 71 | 59 | 40 | 21 | 400 | 1 033 |