79% (1999)

76% (2000)

58% (1996)

72% (1997)

68% (2001)

0% (1964)

48% (1998)

58% (2004)

72% (1996)

57% (2006)

70% (2003)

69% (1998)

65% (2002)

69% (1999)

42% (1999)

58% (1999)

67% (1997)

80% (1998)

52% (2004)

56% (1997)