79% (1999)

58% (1996)

69% (1999)

0% (1964)

68% (2001)

71% (1996)

72% (1997)

59% (2004)

69% (1998)

70% (2003)

76% (2000)

57% (2006)

65% (2002)

48% (1998)

58% (1999)

67% (1997)

60% (2000)

53% (2005)

42% (1999)

80% (1998)