| 年份 | 毛里塔尼亚 |
|---|---|
| 2023 | - |
| 2022 | 3.98916 |
| 2021 | 4.00017 |
| 2020 | 4.07719 |
| 2019 | 4.15842 |
| 2018 | 4.2188 |
| 2017 | 4.27881 |
| 2016 | 4.33689 |
| 2015 | 4.39536 |
| 2014 | 4.44515 |
| 2013 | 4.75068 |
| 2012 | 5.01653 |
| 2011 | 4.94243 |
| 2010 | 4.82815 |
| 2009 | 4.70891 |
| 2008 | 4.52528 |
| 2007 | 4.372 |
| 2006 | 4.34494 |
| 2005 | 4.32478 |
| 2004 | 4.32243 |
| 2003 | 4.34263 |
| 2002 | 4.35764 |
| 2001 | 3.81803 |
| 2000 | 2.47686 |
| 1999 | 2.39034 |
| 1998 | 2.31314 |
| 1997 | 1.93843 |
| 1996 | 1.69774 |
| 1995 | 2.45524 |
| 1994 | 3.11659 |
| 1993 | 3.76946 |
| 1992 | 3.53875 |
| 1991 | 2.64464 |
| 1990 | 2.25966 |
| 1989 | 2.23709 |
| 1988 | 6.16418 |
| 1987 | 7.36992 |
| 1986 | 7.50014 |
| 1985 | 7.62883 |
| 1984 | 7.76538 |
| 1983 | 7.87699 |
| 1982 | 7.98787 |
| 1981 | 8.06638 |
| 1980 | 8.14258 |
| 1979 | 8.2219 |
| 1978 | 8.30978 |
| 1977 | 8.90688 |
| 1976 | 9.55687 |
| 1975 | 9.66276 |
| 1974 | 9.77681 |
| 1973 | 9.87486 |
| 1972 | 10.0021 |
| 1971 | 10.1014 |
| 1970 | 10.2057 |
| 1969 | 10.2751 |
| 1968 | 10.3736 |
| 1967 | 10.4244 |
| 1966 | 10.4495 |
| 1965 | 10.4618 |
| 1964 | 10.485 |
| 1963 | 10.4885 |
| 1962 | 10.4892 |
| 1961 | 10.4866 |
| 1960 | - |