63% (1975)

62% (1989)

68% (1976)

69% (1966)

71% (1972)

50% (1982)

61% (1969)

62% (1989)

45% (1976)

62% (2001)

61% (1992)

57% (1978)

60% (1991)

53% (1985)

56% (1994)

20% (1968)

40% (1986)

60% (1985)

0% (1974)

70% (1994)