76% (1997)

79% (1999)

78% (1994)

68% (2001)

72% (1997)

70% (2003)

69% (1998)

70% (1999)

76% (2000)

0% (1964)

58% (2004)

81% (1998)

48% (1998)

67% (2000)

65% (2002)

71% (1996)

51% (2006)

57% (2006)

61% (1996)

53% (2005)