| Year | Nairobi | Kisumu |
|---|---|---|
| 2026 | 2,190 | — |
| 2025 | 28,134 | 5,029 |
| 2024 | 26,705 | — |
| 2023 | 24,540 | 23,322 |
| 2022 | 22,208 | 23,339 |
| 2021 | 5,825 | 23,717 |
| 2020 | 11,866 | 26,939 |
| 2019 | 51,877 | 25,777 |
| 2018 | 100,658 | 21,771 |
| 2017 | 9,784 | 15,489 |
| 2016 | 51,238 | 12,821 |
| 2015 | 67,175 | 6,084 |
| 2014 | 77,751 | 4,244 |
| 2013 | 66,607 | 3,162 |
| 2012 | 42,127 | 2,242 |
| 2011 | 39,413 | 1,431 |
| 2010 | 22,743 | 5 |
| 2009 | 8,168 | — |
| 2008 | 5,397 | — |
| 2005 | 7,209 | — |
| 1997 | 5,509 | — |
| 1996 | 11,953 | — |
| 1995 | 12,911 | — |
| 1994 | 8,043 | — |
| 1993 | 2,254 | — |
| 1991 | 1,002 | — |
| 1990 | 3,430 | — |
| 1989 | 4,500 | — |
| 1982 | 2,339 | — |
| 1981 | 3,962 | — |
| 1979 | 418,031 | — |