| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | 20.846 |
| 2021 | 20.514 |
| 2020 | 20.199 |
| 2019 | 19.899 |
| 2018 | 19.615 |
| 2017 | 19.346 |
| 2016 | 19.092 |
| 2015 | 18.852 |
| 2014 | 18.626 |
| 2013 | 18.415 |
| 2012 | 18.217 |
| 2011 | 18.032 |
| 2010 | 17.86 |
| 2009 | 17.701 |
| 2008 | 17.555 |
| 2007 | 17.42 |
| 2006 | 17.287 |
| 2005 | 17.154 |
| 2004 | 17.023 |
| 2003 | 16.891 |
| 2002 | 16.761 |
| 2001 | 16.632 |
| 2000 | 16.504 |
| 1999 | 16.376 |
| 1998 | 16.249 |
| 1997 | 16.123 |
| 1996 | 15.997 |
| 1995 | 15.873 |
| 1994 | 15.749 |
| 1993 | 15.626 |
| 1992 | 14.912 |
| 1991 | 14.074 |
| 1990 | 13.276 |
| 1989 | 12.517 |
| 1988 | 11.797 |
| 1987 | 11.111 |
| 1986 | 10.461 |
| 1985 | 9.844 |
| 1984 | 9.261 |
| 1983 | 8.708 |
| 1982 | 8.497 |
| 1981 | 8.508 |
| 1980 | 8.519 |
| 1979 | 8.531 |
| 1978 | 8.542 |
| 1977 | 8.553 |
| 1976 | 8.565 |
| 1975 | 8.576 |
| 1974 | 8.587 |
| 1973 | 8.599 |
| 1972 | 8.61 |
| 1971 | 8.622 |
| 1970 | 8.633 |
| 1969 | 8.645 |
| 1968 | 8.656 |
| 1967 | 8.667 |
| 1966 | 8.679 |
| 1965 | 8.69 |
| 1964 | 8.702 |
| 1963 | 8.714 |
| 1962 | 8.725 |
| 1961 | 8.737 |
| 1960 | 8.748 |