62% (1995)

46% (2004)

50% (1977)

66% (1973)

47% (1992)

60% (1973)

49% (1974)

62% (1974)

58% (1993)

50% (1984)

0% (1974)

64% (1973)

59% (1991)

63% (1974)

48% (1992)

35% (1971)

61% (1973)

40% (1978)

40% (1969)

64% (1975)