| 年份 | 博茨瓦纳岁数 |
|---|---|
| 2023 | 69.16 |
| 2022 | 68.75 |
| 2021 | 63.30 |
| 2020 | 67.64 |
| 2019 | 67.17 |
| 2018 | 66.37 |
| 2017 | 65.42 |
| 2016 | 64.32 |
| 2015 | 63.22 |
| 2014 | 62.17 |
| 2013 | 61.22 |
| 2012 | 60.38 |
| 2011 | 59.72 |
| 2010 | 59.14 |
| 2009 | 58.30 |
| 2008 | 57.66 |
| 2007 | 56.74 |
| 2006 | 55.11 |
| 2005 | 54.39 |
|
|
|
| 2004 | 53.57 |
| 2003 | 52.85 |
| 2002 | 52.37 |
| 2001 | 52.21 |
| 2000 | 52.26 |
| 1999 | 52.50 |
| 1998 | 52.97 |
| 1997 | 53.59 |
| 1996 | 54.28 |
| 1995 | 54.71 |
| 1994 | 55.97 |
| 1993 | 57.32 |
| 1992 | 58.19 |
| 1991 | 58.91 |
| 1990 | 60.10 |
| 1989 | 61.19 |
| 1988 | 61.70 |
| 1987 | 62.84 |
| 1986 | 63.36 |
| 1985 | 63.65 |
|
|
|
| 1984 | 63.71 |
| 1983 | 63.60 |
| 1982 | 63.38 |
| 1981 | 63.03 |
| 1980 | 62.53 |
| 1979 | 62.04 |
| 1978 | 61.48 |
| 1977 | 60.87 |
| 1976 | 60.21 |
| 1975 | 59.53 |
| 1974 | 58.91 |
| 1973 | 58.29 |
| 1972 | 57.67 |
| 1971 | 57.06 |
| 1970 | 56.45 |
| 1969 | 55.90 |
| 1968 | 55.37 |
| 1967 | 54.86 |
| 1966 | 54.36 |
| 1965 | 53.85 |
| 1964 | 53.36 |
| 1963 | 52.85 |
| 1962 | 52.31 |
| 1961 | 51.78 |
| 1960 | 51.22 |