63% (1966)

64% (1965)

58% (1975)

60% (1967)

60% (1981)

68% (1967)

58% (1970)

47% (1995)

47% (2003)

65% (1962)

61% (1967)

55% (1970)

60% (1970)

60% (1980)

20% (1981)

20% (1972)

40% (1977)

68% (1962)

53% (1967)

60% (1967)