| 年份 | 毛里塔尼亚 |
|---|---|
| 2023 | - |
| 2022 | 3.16239 |
| 2021 | 3.13027 |
| 2020 | 3.09653 |
| 2019 | 3.06121 |
| 2018 | 3.02629 |
| 2017 | 2.99384 |
| 2016 | 2.96363 |
| 2015 | 2.93531 |
| 2014 | 2.90772 |
| 2013 | 2.87929 |
| 2012 | 2.85866 |
| 2011 | 2.84186 |
| 2010 | 2.8154 |
| 2009 | 2.7818 |
| 2008 | 2.74446 |
| 2007 | 2.7093 |
| 2006 | 2.68014 |
| 2005 | 2.65491 |
| 2004 | 2.6294 |
| 2003 | 2.62956 |
| 2002 | 2.66971 |
| 2001 | 2.72612 |
| 2000 | 2.79065 |
| 1999 | 2.86605 |
| 1998 | 2.91824 |
| 1997 | 2.92886 |
| 1996 | 2.92455 |
| 1995 | 2.91939 |
| 1994 | 2.91382 |
| 1993 | 2.90929 |
| 1992 | 2.91484 |
| 1991 | 2.91991 |
| 1990 | 2.9163 |
| 1989 | 2.9191 |
| 1988 | 2.93063 |
| 1987 | 2.94047 |
| 1986 | 2.94973 |
| 1985 | 2.96064 |
| 1984 | 2.97153 |
| 1983 | 2.98048 |
| 1982 | 2.98794 |
| 1981 | 2.99545 |
| 1980 | 3.00329 |
| 1979 | 3.00998 |
| 1978 | 3.0156 |
| 1977 | 3.02136 |
| 1976 | 3.0273 |
| 1975 | 3.03353 |
| 1974 | 3.04084 |
| 1973 | 3.04938 |
| 1972 | 3.05898 |
| 1971 | 3.06954 |
| 1970 | 3.0806 |
| 1969 | 3.09211 |
| 1968 | 3.10351 |
| 1967 | 3.11413 |
| 1966 | 3.12299 |
| 1965 | 3.12942 |
| 1964 | 3.13372 |
| 1963 | 3.13596 |
| 1962 | 3.13558 |
| 1961 | 3.1315 |
| 1960 | 3.12305 |