| @ | ƒCƒ“ƒtƒŒ—¦(*) | ¤‹Æ‹âs—a‹à‹à—˜(‚P”Nj | |
| @ | @ | –¼–Ú‹à—˜ | ŽÀŽ¿‹à—˜ |
| 1960/61 | 6.6 | 3.3 | -3.3 |
| 1961/62 | 0.2 | 4.0 | 3.8 |
| 1962/63 | 3.8 | 4.0 | 0.2 |
| 1963/64 | 6.3 | 4.0 | -2.3 |
| 1964/68 | 10.8 | 4.8 | -6.0 |
| 1965/66 | 7.7 | 5.5 | -2.2 |
| 1966/67 | 13.9 | 6.0 | -7.9 |
| 1967/68 | 11.6 | 6.0 | -5.6 |
| 1968/69 | -1.2 | 5.5 | 6.7 |
| 1969/70 | 3.8 | 5.5 | 1.7 |
| 1970/71 | 5.5 | 6.0 | 0.5 |
| 1971/72 | 5.6 | 6.0 | 0.4 |
| 1972/73 | 10.0 | 6.0 | -4.0 |
| 1973/74 | 20.2 | 6.0 | -14.2 |
| 1974/75 | 25.2 | 8.0 | -17.2 |
| 1975/76 | -1.1 | 8.0 | 9.1 |
| 1976/77 | 2.1 | 8.0 | 5.9 |
| 1977/78 | 5.2 | 8.0 | 3.2 |
| 1978/79 | 0.0 | 6.0 | 6.0 |
| 1979/80 | 17.1 | 7.0 | -10.1 |
| 1980/81 | 18.2 | 7.5 | -10.7 |
| 1981/82 | 9.3 | 8.5 | -1.3 |
| 1982/83 | 2.6 | 9.0 | 6.4 |
| 1983/84 | 9.5 | 8.0 | -1.5 |
| 1984/85 | 7.1 | 8.0 | 0.9 |
| 1985/86 | 5.7 | 8.5 | 2.8 |
| 1986/87 | 5.3 | 8.5 | 3.2 |
| 1987/88 | 7.6 | 9.0 | 1.4 |
| 1988/89 | 7.4 | 9.0 | 1.6 |
| 1989/90 | 7.4 | 9.0 | 1.6 |
| 1990/91 | 12.1 | 9.5 | -2.6 |
| 1991/92 | 13.6 | 12.0 | -1.6 |
| 1992/93 | 7.0 | 11.0 | 4.0 |
| 1993/94 | 10.8 | 10.0 | -0.8 |
| 1994/95 | 10.4 | 11.0 | 0.6 |
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oŠFJoshi & Little [1994]@p.312; ‚q‚a‚h[A]; ‚f‚n‚h[A]