| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 6.65474 |
| 2021 | 7.09432 |
| 2020 | 7.5318 |
| 2019 | 7.92796 |
| 2018 | 8.20264 |
| 2017 | 8.33562 |
| 2016 | 8.31488 |
| 2015 | 8.08425 |
| 2014 | 7.62193 |
| 2013 | 7.01331 |
| 2012 | 6.35582 |
| 2011 | 5.744 |
| 2010 | 5.28666 |
| 2009 | 5.00747 |
| 2008 | 4.84247 |
| 2007 | 4.8046 |
| 2006 | 4.97432 |
| 2005 | 5.39849 |
| 2004 | 6.11264 |
| 2003 | 7.19337 |
| 2002 | 8.63921 |
| 2001 | 10.3639 |
| 2000 | 12.0649 |
| 1999 | 12.9571 |
| 1998 | 12.8066 |
| 1997 | 11.9433 |
| 1996 | 10.3867 |
| 1995 | 9.16751 |
| 1994 | 9.46002 |
| 1993 | 10.6386 |
| 1992 | 12.2736 |
| 1991 | 14.1871 |
| 1990 | 15.8952 |
| 1989 | 16.6832 |
| 1988 | 16.4129 |
| 1987 | 15.5522 |
| 1986 | 14.471 |
| 1985 | 13.4396 |
| 1984 | 12.6269 |
| 1983 | 12.0586 |
| 1982 | 11.5926 |
| 1981 | 11.0575 |
| 1980 | 10.4948 |
| 1979 | 10.2826 |
| 1978 | 10.3706 |
| 1977 | 10.405 |
| 1976 | 10.3123 |
| 1975 | 10.0866 |
| 1974 | 9.78613 |
| 1973 | 9.4019 |
| 1972 | 8.97802 |
| 1971 | 8.58503 |
| 1970 | 8.23743 |
| 1969 | 7.98324 |
| 1968 | 7.72732 |
| 1967 | 7.38588 |
| 1966 | 7.06563 |
| 1965 | 6.88573 |
| 1964 | 6.84723 |
| 1963 | 6.85348 |
| 1962 | 6.86891 |
| 1961 | 6.94817 |
| 1960 | 6.96924 |