81% (1993)

72% (1993)

81% (1971)

75% (1959)

55% (1992)

70% (2003)

80% (1974)

73% (1982)

69% (1998)

70% (1975)

68% (1992)

74% (1995)

70% (1976)

65% (1999)

79% (1989)

40% (1999)

72% (2004)

67% (2003)

60% (2004)

0% (1996)