| 年份 | 津巴布韦 |
|---|---|
| 2023 | - |
| 2022 | 2.30844 |
| 2021 | 2.23472 |
| 2020 | 2.13042 |
| 2019 | 1.99235 |
| 2018 | 1.93365 |
| 2017 | 1.86076 |
| 2016 | 1.80661 |
| 2015 | 1.76951 |
| 2014 | 1.73098 |
| 2013 | 1.61353 |
| 2012 | 1.27257 |
| 2011 | 0.891612 |
| 2010 | 0.706879 |
| 2009 | 0.482488 |
| 2008 | 0.254389 |
| 2007 | 0.428246 |
| 2006 | 0.320336 |
| 2005 | -0.0141481 |
| 2004 | 0.163857 |
| 2003 | 0.451008 |
| 2002 | 1.82377 |
| 2001 | 1.85572 |
| 2000 | 2.22893 |
| 1999 | 2.67608 |
| 1998 | 2.86057 |
| 1997 | 2.87803 |
| 1996 | 2.91363 |
| 1995 | 2.49866 |
| 1994 | 1.8567 |
| 1993 | 2.86701 |
| 1992 | 5.03592 |
| 1991 | 5.13043 |
| 1990 | 5.25979 |
| 1989 | 5.46341 |
| 1988 | 5.72313 |
| 1987 | 5.88627 |
| 1986 | 5.99336 |
| 1985 | 6.12112 |
| 1984 | 6.27478 |
| 1983 | 6.49809 |
| 1982 | 6.19011 |
| 1981 | 8.59086 |
| 1980 | 8.09509 |
| 1979 | 3.96482 |
| 1978 | 3.84691 |
| 1977 | 4.96341 |
| 1976 | 5.4908 |
| 1975 | 5.63485 |
| 1974 | 6.03448 |
| 1973 | 5.96027 |
| 1972 | 5.89904 |
| 1971 | 5.83818 |
| 1970 | 5.91424 |
| 1969 | 6.63831 |
| 1968 | 6.76828 |
| 1967 | 6.77466 |
| 1966 | 6.78956 |
| 1965 | 6.80312 |
| 1964 | 6.83561 |
| 1963 | 6.83668 |
| 1962 | 5.12067 |
| 1961 | 4.77001 |
| 1960 | - |