| 年份 | 毛里塔尼亚 |
|---|---|
| 2023 | - |
| 2022 | 2.5916 |
| 2021 | 2.55391 |
| 2020 | 2.584 |
| 2019 | 2.61465 |
| 2018 | 2.62619 |
| 2017 | 2.63352 |
| 2016 | 2.64253 |
| 2015 | 2.64596 |
| 2014 | 2.64221 |
| 2013 | 2.89612 |
| 2012 | 3.12479 |
| 2011 | 3.01844 |
| 2010 | 2.87305 |
| 2009 | 2.7238 |
| 2008 | 2.49989 |
| 2007 | 2.31869 |
| 2006 | 2.26047 |
| 2005 | 2.20803 |
| 2004 | 2.1699 |
| 2003 | 2.16039 |
| 2002 | 2.14496 |
| 2001 | 2.44917 |
| 2000 | 2.79918 |
| 1999 | 2.71177 |
| 1998 | 2.63077 |
| 1997 | 2.25782 |
| 1996 | 2.01601 |
| 1995 | 2.77516 |
| 1994 | 3.43279 |
| 1993 | 4.08473 |
| 1992 | 3.85564 |
| 1991 | 2.96044 |
| 1990 | 2.57455 |
| 1989 | 2.54841 |
| 1988 | 2.91508 |
| 1987 | 2.90958 |
| 1986 | 2.92007 |
| 1985 | 2.93983 |
| 1984 | 2.95244 |
| 1983 | 2.95959 |
| 1982 | 2.96179 |
| 1981 | 2.94249 |
| 1980 | 2.90775 |
| 1979 | 2.89266 |
| 1978 | 2.88677 |
| 1977 | 2.91802 |
| 1976 | 2.96296 |
| 1975 | 2.96766 |
| 1974 | 2.96958 |
| 1973 | 2.9755 |
| 1972 | 2.98309 |
| 1971 | 2.99887 |
| 1970 | 3.01837 |
| 1969 | 3.02453 |
| 1968 | 3.01755 |
| 1967 | 3.00019 |
| 1966 | 2.96668 |
| 1965 | 2.92027 |
| 1964 | 2.87075 |
| 1963 | 2.82142 |
| 1962 | 2.77827 |
| 1961 | 2.72759 |
| 1960 | - |