メス | オス | 合計 | 性比(♂割合) | ||
1985 | 0 | 1 | 1 | 1 | |
1986 | 0 | 0 | 0 | ||
1987 | 2 | 4 | 6 | 0.666667 | |
1988 | 2 | 1 | 3 | 0.333333 | |
1989 | 2 | 2 | 4 | 0.5 | |
1990 | 1 | 4 | 5 | 0.8 | |
1991 | 2 | 2 | 4 | 0.5 | |
1992 | 2 | 3 | 5 | 0.6 | |
1993 | 1 | 1 | 2 | 0.5 | |
1994 | 2 | 2 | 4 | 0.5 | |
1995 | 4 | 4 | 8 | 0.5 | |
1996 | 5 | 3 | 8 | 0.375 | |
1997 | 2 | 4 | 6 | 0.666667 | |
1998 | 8 | 3 | 11 | 0.272727 | |
1999 | 0 | 0 | |||
2000 | 2 | 2 | 2 | ||
2001 | 1 | 1 | 1 | ||
2002 | 1 | 1 | 1 | ||
2003 | 4 | 4 | 4 | ||
2004 | 4 | 4 | 4 | ||
2005 | 2 | 2 | 2 | ||
平均 | 1.116547 |