64% (1973)

63% (1992)

68% (1988)

52% (1995)

66% (1980)

39% (1972)

64% (1973)

50% (1982)

55% (1981)

63% (1966)

51% (1974)

40% (1973)

52% (1986)

30% (1971)

50% (2003)

30% (1992)

63% (1968)

50% (1971)

70% (1967)

50% (1969)