75% (1997)

78% (1994)

79% (1999)

70% (1999)

67% (2000)

65% (2004)

72% (1997)

61% (1996)

58% (1996)

69% (1999)

70% (2003)

53% (2005)

52% (2006)

0% (1995)

69% (1998)

76% (2000)

0% (1964)

68% (2001)

81% (1998)

74% (2001)