62% (1989)

68% (1976)

71% (1972)

69% (1966)

63% (1975)

50% (1982)

61% (1969)

62% (1989)

60% (1991)

62% (2001)

45% (1976)

59% (1978)

61% (1992)

57% (1994)

0% (1974)

41% (1986)

53% (1985)

60% (1985)

20% (1968)

70% (1994)