79% (1999)

0% (1964)

72% (1997)

69% (1998)

72% (1996)

69% (1999)

76% (2000)

68% (2001)

59% (2004)

49% (1998)

70% (2003)

58% (2006)

67% (1997)

58% (1996)

58% (1999)

42% (1999)

80% (1998)

56% (1997)

64% (2002)

52% (2004)