79% (1966)

66% (1998)

60% (2004)

80% (1993)

41% (1981)

48% (2002)

45% (1963)

65% (1997)

64% (1988)

64% (1995)

58% (1964)

60% (1970)

61% (1995)

74% (1995)

0% (1959)

70% (1996)

68% (1982)

67% (1994)

78% (1984)

70% (1998)