65% (1973)

53% (1995)

64% (1992)

65% (1980)

39% (1972)

68% (1988)

64% (1973)

40% (1973)

51% (1974)

55% (1981)

70% (1967)

48% (1974)

52% (1986)

60% (1971)

63% (1966)

30% (1971)

50% (2003)

70% (1966)

30% (1965)

50% (1971)