| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 9.55885 |
| 2021 | 9.4052 |
| 2020 | 9.22439 |
| 2019 | 9.01762 |
| 2018 | 8.77969 |
| 2017 | 8.52381 |
| 2016 | 8.22427 |
| 2015 | 7.84446 |
| 2014 | 7.37608 |
| 2013 | 6.84682 |
| 2012 | 6.3037 |
| 2011 | 5.75955 |
| 2010 | 5.20689 |
| 2009 | 4.75101 |
| 2008 | 4.41051 |
| 2007 | 4.10552 |
| 2006 | 3.82233 |
| 2005 | 3.53518 |
| 2004 | 3.22347 |
| 2003 | 2.87721 |
| 2002 | 2.52145 |
| 2001 | 2.19427 |
| 2000 | 1.9418 |
| 1999 | 1.84315 |
| 1998 | 1.8922 |
| 1997 | 2.0103 |
| 1996 | 2.17846 |
| 1995 | 2.32936 |
| 1994 | 2.36248 |
| 1993 | 2.31484 |
| 1992 | 2.21272 |
| 1991 | 2.04835 |
| 1990 | 1.87533 |
| 1989 | 1.73455 |
| 1988 | 1.63102 |
| 1987 | 1.60567 |
| 1986 | 1.63983 |
| 1985 | 1.7053 |
| 1984 | 1.82562 |
| 1983 | 1.96864 |
| 1982 | 2.11669 |
| 1981 | 2.27696 |
| 1980 | 2.39819 |
| 1979 | 2.3859 |
| 1978 | 2.30284 |
| 1977 | 2.20822 |
| 1976 | 2.09366 |
| 1975 | 2.0458 |
| 1974 | 2.06476 |
| 1973 | 2.07993 |
| 1972 | 2.18608 |
| 1971 | 2.44154 |
| 1970 | 2.65896 |
| 1969 | 2.727 |
| 1968 | 2.80516 |
| 1967 | 2.88765 |
| 1966 | 2.77097 |
| 1965 | 2.59183 |
| 1964 | 2.46926 |
| 1963 | 2.36606 |
| 1962 | 2.35066 |
| 1961 | 2.36133 |
| 1960 | 2.35011 |