| 年份 | 肯尼亚 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 0.109422 |
| 2020 | 0.111569 |
| 2019 | 0.113834 |
| 2018 | 0.116108 |
| 2017 | 0.118493 |
| 2016 | 0.121099 |
| 2015 | 0.123795 |
| 2014 | 0.12655 |
| 2013 | 0.129486 |
| 2012 | 0.132645 |
| 2011 | 0.136038 |
| 2010 | 0.132473 |
| 2009 | 0.136259 |
| 2008 | 0.135249 |
| 2007 | 0.139339 |
| 2006 | 0.143804 |
| 2005 | 0.146863 |
| 2004 | 0.151127 |
| 2003 | 0.152397 |
| 2002 | 0.155309 |
| 2001 | 0.161256 |
| 2000 | 0.158533 |
| 1999 | 0.170064 |
| 1998 | 0.16055 |
| 1997 | 0.169721 |
| 1996 | 0.169143 |
| 1995 | 0.202319 |
| 1994 | 0.208619 |
| 1993 | 0.199277 |
| 1992 | 0.214636 |
| 1991 | 0.213101 |
| 1990 | 0.215437 |
| 1989 | 0.23553 |
| 1988 | 0.225746 |
| 1987 | 0.222918 |
| 1986 | 0.227817 |
| 1985 | 0.235141 |
| 1984 | 0.198633 |
| 1983 | 0.2103 |
| 1982 | 0.218247 |
| 1981 | 0.22638 |
| 1980 | 0.234754 |
| 1979 | 0.243268 |
| 1978 | 0.251865 |
| 1977 | 0.260678 |
| 1976 | 0.26946 |
| 1975 | 0.278349 |
| 1974 | 0.265072 |
| 1973 | 0.274286 |
| 1972 | 0.284024 |
| 1971 | 0.294156 |
| 1970 | 0.305062 |
| 1969 | 0.317042 |
| 1968 | 0.329757 |
| 1967 | 0.343101 |
| 1966 | 0.357048 |
| 1965 | 0.37166 |
| 1964 | 0.386852 |
| 1963 | 0.402428 |
| 1962 | 0.418481 |
| 1961 | 0.434919 |
| 1960 | - |