| 年份 | 博茨瓦纳岁数 |
|---|---|
| 2023 | 71.70 |
| 2022 | 71.25 |
| 2021 | 65.51 |
| 2020 | 70.36 |
| 2019 | 69.58 |
| 2018 | 68.70 |
| 2017 | 67.61 |
| 2016 | 66.39 |
| 2015 | 65.18 |
| 2014 | 64.09 |
| 2013 | 63.18 |
| 2012 | 62.42 |
| 2011 | 61.90 |
| 2010 | 61.49 |
| 2009 | 60.48 |
| 2008 | 59.38 |
| 2007 | 58.40 |
| 2006 | 56.71 |
| 2005 | 56.28 |
|
|
|
| 2004 | 55.38 |
| 2003 | 54.66 |
| 2002 | 54.17 |
| 2001 | 53.96 |
| 2000 | 54.02 |
| 1999 | 54.34 |
| 1998 | 54.95 |
| 1997 | 55.73 |
| 1996 | 56.66 |
| 1995 | 57.66 |
| 1994 | 58.72 |
| 1993 | 59.98 |
| 1992 | 61.26 |
| 1991 | 62.50 |
| 1990 | 63.73 |
| 1989 | 64.74 |
| 1988 | 65.10 |
| 1987 | 66.14 |
| 1986 | 66.51 |
| 1985 | 66.71 |
|
|
|
| 1984 | 66.62 |
| 1983 | 66.42 |
| 1982 | 66.08 |
| 1981 | 65.65 |
| 1980 | 65.12 |
| 1979 | 64.54 |
| 1978 | 63.95 |
| 1977 | 63.26 |
| 1976 | 62.56 |
| 1975 | 61.81 |
| 1974 | 61.18 |
| 1973 | 60.51 |
| 1972 | 59.86 |
| 1971 | 59.25 |
| 1970 | 58.62 |
| 1969 | 58.09 |
| 1968 | 57.55 |
| 1967 | 57.02 |
| 1966 | 56.49 |
| 1965 | 55.92 |
| 1964 | 55.37 |
| 1963 | 54.81 |
| 1962 | 54.23 |
| 1961 | 53.72 |
| 1960 | 53.12 |