| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 9.27164 |
| 2021 | 9.69658 |
| 2020 | 9.95475 |
| 2019 | 10.0595 |
| 2018 | 10.0268 |
| 2017 | 9.88008 |
| 2016 | 9.69485 |
| 2015 | 9.50595 |
| 2014 | 9.31216 |
| 2013 | 9.10909 |
| 2012 | 8.89785 |
| 2011 | 8.64115 |
| 2010 | 8.20614 |
| 2009 | 7.64567 |
| 2008 | 7.06568 |
| 2007 | 6.47658 |
| 2006 | 5.90697 |
| 2005 | 5.40485 |
| 2004 | 5.00433 |
| 2003 | 4.68496 |
| 2002 | 4.40413 |
| 2001 | 4.14781 |
| 2000 | 3.90977 |
| 1999 | 3.73026 |
| 1998 | 3.59126 |
| 1997 | 3.46367 |
| 1996 | 3.38809 |
| 1995 | 3.37466 |
| 1994 | 3.40999 |
| 1993 | 3.46323 |
| 1992 | 3.49617 |
| 1991 | 3.49482 |
| 1990 | 3.42229 |
| 1989 | 3.25822 |
| 1988 | 3.0741 |
| 1987 | 2.91409 |
| 1986 | 2.76336 |
| 1985 | 2.66454 |
| 1984 | 2.64105 |
| 1983 | 2.67304 |
| 1982 | 2.82086 |
| 1981 | 3.05981 |
| 1980 | 3.32181 |
| 1979 | 3.42577 |
| 1978 | 3.29819 |
| 1977 | 3.15632 |
| 1976 | 3.06091 |
| 1975 | 2.99049 |
| 1974 | 2.9689 |
| 1973 | 2.94318 |
| 1972 | 2.84418 |
| 1971 | 2.76823 |
| 1970 | 2.79383 |
| 1969 | 2.83569 |
| 1968 | 2.76725 |
| 1967 | 2.77623 |
| 1966 | 2.9312 |
| 1965 | 3.10825 |
| 1964 | 3.21508 |
| 1963 | 3.26246 |
| 1962 | 3.25642 |
| 1961 | 3.11873 |
| 1960 | 2.98063 |