| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 6.10927 |
| 2021 | 6.17885 |
| 2020 | 6.28812 |
| 2019 | 6.45566 |
| 2018 | 6.70698 |
| 2017 | 7.06606 |
| 2016 | 7.48548 |
| 2015 | 7.9871 |
| 2014 | 8.64733 |
| 2013 | 9.27534 |
| 2012 | 9.68372 |
| 2011 | 9.922 |
| 2010 | 9.86317 |
| 2009 | 9.33636 |
| 2008 | 8.74349 |
| 2007 | 8.44348 |
| 2006 | 8.38993 |
| 2005 | 8.54582 |
| 2004 | 8.83739 |
| 2003 | 9.22648 |
| 2002 | 9.80353 |
| 2001 | 10.6665 |
| 2000 | 11.8263 |
| 1999 | 13.1228 |
| 1998 | 14.1526 |
| 1997 | 14.4045 |
| 1996 | 13.7687 |
| 1995 | 12.8026 |
| 1994 | 12.2216 |
| 1993 | 11.8797 |
| 1992 | 11.6932 |
| 1991 | 11.8335 |
| 1990 | 12.4367 |
| 1989 | 13.4398 |
| 1988 | 14.5834 |
| 1987 | 15.4925 |
| 1986 | 15.9202 |
| 1985 | 15.8022 |
| 1984 | 15.2502 |
| 1983 | 14.5158 |
| 1982 | 13.9298 |
| 1981 | 13.863 |
| 1980 | 14.4977 |
| 1979 | 15.1687 |
| 1978 | 15.6078 |
| 1977 | 16.2516 |
| 1976 | 17.0167 |
| 1975 | 17.8027 |
| 1974 | 18.4818 |
| 1973 | 18.9003 |
| 1972 | 19.0344 |
| 1971 | 19.028 |
| 1970 | 18.8068 |
| 1969 | 17.8677 |
| 1968 | 16.9749 |
| 1967 | 16.8807 |
| 1966 | 17.0998 |
| 1965 | 17.283 |
| 1964 | 17.3565 |
| 1963 | 17.4643 |
| 1962 | 17.8873 |
| 1961 | 18.6215 |
| 1960 | 19.4908 |