| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | - |
| 2021 | 39.6 |
| 2020 | 39.8 |
| 2019 | 39.8 |
| 2018 | 39.8 |
| 2017 | 39.9 |
| 2016 | 40 |
| 2015 | 40.1 |
| 2014 | 40.3 |
| 2013 | 40.5 |
| 2012 | 40.9 |
| 2011 | 41.8 |
| 2010 | 43 |
| 2009 | 44.3 |
| 2008 | 45.7 |
| 2007 | 47.1 |
| 2006 | 48.4 |
| 2005 | 49.7 |
| 2004 | 50.9 |
| 2003 | 52.2 |
| 2002 | 53.5 |
| 2001 | 54.8 |
| 2000 | 56 |
| 1999 | 57.3 |
| 1998 | 58.3 |
| 1997 | 59.1 |
| 1996 | 60 |
| 1995 | 60.8 |
| 1994 | 61.4 |
| 1993 | 62.1 |
| 1992 | 62.8 |
| 1991 | 63.3 |
| 1990 | 63.6 |
| 1989 | 64 |
| 1988 | - |
| 1987 | - |
| 1986 | - |
| 1985 | - |
| 1984 | - |
| 1983 | - |
| 1982 | - |
| 1981 | - |
| 1980 | - |
| 1979 | - |
| 1978 | - |
| 1977 | - |
| 1976 | - |
| 1975 | - |
| 1974 | - |
| 1973 | - |
| 1972 | - |
| 1971 | - |
| 1970 | - |
| 1969 | - |
| 1968 | - |
| 1967 | - |
| 1966 | - |
| 1965 | - |
| 1964 | - |
| 1963 | - |
| 1962 | - |
| 1961 | - |
| 1960 | - |