| 年份 | 布隆迪 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 20.4 |
| 2020 | 20.9 |
| 2019 | 21.3 |
| 2018 | 21.9 |
| 2017 | 22.4 |
| 2016 | 23 |
| 2015 | 23.6 |
| 2014 | 24.4 |
| 2013 | 25.2 |
| 2012 | 26.2 |
| 2011 | 27.2 |
| 2010 | 28.2 |
| 2009 | 29.1 |
| 2008 | 30.1 |
| 2007 | 31.2 |
| 2006 | 32.2 |
| 2005 | 33.2 |
| 2004 | 34 |
| 2003 | 34.7 |
| 2002 | 35.4 |
| 2001 | 36 |
| 2000 | 36.7 |
| 1999 | 37.2 |
| 1998 | 37.7 |
| 1997 | 38.2 |
| 1996 | 38.5 |
| 1995 | 38.8 |
| 1994 | 39.1 |
| 1993 | 39.6 |
| 1992 | 39.4 |
| 1991 | 39.4 |
| 1990 | 39.4 |
| 1989 | 39.4 |
| 1988 | 39.5 |
| 1987 | 39.6 |
| 1986 | 40 |
| 1985 | 40.6 |
| 1984 | 41.5 |
| 1983 | 42.5 |
| 1982 | 43.5 |
| 1981 | 44.5 |
| 1980 | 45.5 |
| 1979 | 46.4 |
| 1978 | 47.2 |
| 1977 | 47.9 |
| 1976 | 48.4 |
| 1975 | 48.7 |
| 1974 | 48.9 |
| 1973 | 49.3 |
| 1972 | 50.7 |
| 1971 | 49.8 |
| 1970 | 49.9 |
| 1969 | 50.1 |
| 1968 | 50.1 |
| 1967 | 50.1 |
| 1966 | 50.1 |
| 1965 | 50 |
| 1964 | 49.9 |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |