| 年份 | 南苏丹 |
|---|---|
| 2023 | - |
| 2022 | 5.42835 |
| 2021 | 5.42877 |
| 2020 | 5.41683 |
| 2019 | 5.39562 |
| 2018 | 5.31237 |
| 2017 | 5.08916 |
| 2016 | 4.83521 |
| 2015 | 4.70575 |
| 2014 | 4.62117 |
| 2013 | 4.55956 |
| 2012 | 4.55752 |
| 2011 | 4.56638 |
| 2010 | 4.60479 |
| 2009 | 4.64435 |
| 2008 | 4.67229 |
| 2007 | 4.7129 |
| 2006 | 4.76174 |
| 2005 | 4.81227 |
| 2004 | 4.85895 |
| 2003 | 4.88097 |
| 2002 | 4.87281 |
| 2001 | 4.86224 |
| 2000 | 4.8614 |
| 1999 | 4.8628 |
| 1998 | 4.93396 |
| 1997 | 4.99523 |
| 1996 | 4.96221 |
| 1995 | 4.91877 |
| 1994 | 4.86568 |
| 1993 | 4.81602 |
| 1992 | 4.77938 |
| 1991 | 4.73724 |
| 1990 | 4.68947 |
| 1989 | 4.63787 |
| 1988 | 4.82815 |
| 1987 | 5.03668 |
| 1986 | 5.01377 |
| 1985 | 4.98048 |
| 1984 | 4.94675 |
| 1983 | 4.91037 |
| 1982 | 4.86791 |
| 1981 | 4.82074 |
| 1980 | 4.77202 |
| 1979 | 4.72519 |
| 1978 | 4.67933 |
| 1977 | 4.63297 |
| 1976 | 4.59103 |
| 1975 | 4.55311 |
| 1974 | 4.51625 |
| 1973 | 4.47935 |
| 1972 | 4.46379 |
| 1971 | 4.47386 |
| 1970 | 4.52463 |
| 1969 | 4.62041 |
| 1968 | 4.72224 |
| 1967 | 4.83026 |
| 1966 | 4.95462 |
| 1965 | 5.06586 |
| 1964 | 5.13771 |
| 1963 | 5.23117 |
| 1962 | 5.34135 |
| 1961 | 5.43259 |
| 1960 | 5.52559 |