| 年份 | 北马里亚纳群岛 |
|---|---|
| 2023 | - |
| 2022 | 6.53474 |
| 2021 | 6.2728 |
| 2020 | 6.17486 |
| 2019 | 6.23946 |
| 2018 | 6.44203 |
| 2017 | 6.7513 |
| 2016 | 7.12197 |
| 2015 | 7.51788 |
| 2014 | 7.89619 |
| 2013 | 8.18186 |
| 2012 | 8.3429 |
| 2011 | 8.358 |
| 2010 | 8.09068 |
| 2009 | 7.92339 |
| 2008 | 7.7581 |
| 2007 | 7.13762 |
| 2006 | 6.21376 |
| 2005 | 5.23555 |
| 2004 | 4.47861 |
| 2003 | 4.04928 |
| 2002 | 3.94692 |
| 2001 | 4.22826 |
| 2000 | 4.94938 |
| 1999 | 6.03542 |
| 1998 | 7.20072 |
| 1997 | 7.9024 |
| 1996 | 7.64803 |
| 1995 | 6.82678 |
| 1994 | 6.3716 |
| 1993 | 6.13188 |
| 1992 | 5.96074 |
| 1991 | 6.055 |
| 1990 | 6.74968 |
| 1989 | 8.35775 |
| 1988 | 10.615 |
| 1987 | 12.914 |
| 1986 | 14.8766 |
| 1985 | 16.1255 |
| 1984 | 16.4128 |
| 1983 | 15.7795 |
| 1982 | 14.513 |
| 1981 | 12.9455 |
| 1980 | 11.494 |
| 1979 | 10.8758 |
| 1978 | 11.026 |
| 1977 | 11.3034 |
| 1976 | 11.6047 |
| 1975 | 11.8868 |
| 1974 | 12.143 |
| 1973 | 12.3924 |
| 1972 | 12.5643 |
| 1971 | 12.4474 |
| 1970 | 12.1543 |
| 1969 | 12.3377 |
| 1968 | 12.8111 |
| 1967 | 12.7566 |
| 1966 | 12.1681 |
| 1965 | 11.4272 |
| 1964 | 10.773 |
| 1963 | 10.3065 |
| 1962 | 9.98917 |
| 1961 | 9.67382 |
| 1960 | 9.41136 |