| 年份 | 瑙魯 |
|---|---|
| 2023 | - |
| 2022 | 4.17786 |
| 2021 | 3.8827 |
| 2020 | 3.59752 |
| 2019 | 3.35289 |
| 2018 | 3.17911 |
| 2017 | 3.06181 |
| 2016 | 2.90621 |
| 2015 | 2.68697 |
| 2014 | 2.51935 |
| 2013 | 2.36038 |
| 2012 | 2.18005 |
| 2011 | 2.13102 |
| 2010 | 2.18313 |
| 2009 | 2.23927 |
| 2008 | 2.36677 |
| 2007 | 2.45244 |
| 2006 | 2.46445 |
| 2005 | 2.4495 |
| 2004 | 2.37103 |
| 2003 | 2.27603 |
| 2002 | 2.3022 |
| 2001 | 2.46793 |
| 2000 | 2.67144 |
| 1999 | 2.81921 |
| 1998 | 3.01075 |
| 1997 | 3.16001 |
| 1996 | 3.15985 |
| 1995 | 3.09085 |
| 1994 | 2.96859 |
| 1993 | 2.85565 |
| 1992 | 2.8456 |
| 1991 | 3.18675 |
| 1990 | 3.73714 |
| 1989 | 4.21302 |
| 1988 | 4.50368 |
| 1987 | 4.65976 |
| 1986 | 4.75042 |
| 1985 | 4.63428 |
| 1984 | 4.38351 |
| 1983 | 4.18178 |
| 1982 | 3.93685 |
| 1981 | 3.67618 |
| 1980 | 3.49623 |
| 1979 | 3.23428 |
| 1978 | 3.02345 |
| 1977 | 2.9728 |
| 1976 | 2.95524 |
| 1975 | 3.01474 |
| 1974 | 3.09775 |
| 1973 | 3.18321 |
| 1972 | 3.19303 |
| 1971 | 3.19623 |
| 1970 | 3.25121 |
| 1969 | 3.32374 |
| 1968 | 3.5403 |
| 1967 | 3.88186 |
| 1966 | 4.16786 |
| 1965 | 4.42815 |
| 1964 | 4.70516 |
| 1963 | 4.98888 |
| 1962 | 5.36602 |
| 1961 | 5.80956 |
| 1960 | 6.23219 |