79% (1999)

72% (1997)

76% (2000)

72% (1996)

0% (1964)

69% (1998)

58% (1996)

68% (2001)

59% (2004)

48% (1998)

64% (2002)

70% (2003)

57% (2006)

58% (1999)

67% (1997)

69% (1999)

42% (1999)

80% (1998)

56% (1997)

52% (2004)