64% (1973)

64% (1992)

68% (1988)

70% (1967)

52% (1986)

60% (1971)

52% (1995)

30% (1992)

48% (1974)

55% (1981)

63% (1966)

40% (1973)

50% (2003)

50% (1969)

51% (1974)

39% (1972)

30% (1965)

60% (1975)

50% (1970)

64% (1973)