90% (1982)

30% (1978)

82% (1962)

60% (1970)

80% (1964)

55% (1985)

67% (1988)

50% (1961)

45% (1971)

46% (1997)

0% (1987)

80% (1991)

50% (1980)

50% (1975)

0% (1956)

0% (1986)

50% (1989)

70% (1986)

50% (1959)

70% (1960)