53% (2012)

61% (1979)

44% (1972)

64% (1982)

63% (1973)

68% (1960)

50% (1982)

56% (2012)

55% (1967)

72% (1976)

49% (1970)

58% (1996)

48% (1976)

57% (2009)

50% (1983)

53% (1998)

74% (1998)

49% (1976)

59% (1969)

40% (1973)