74% (1999)

65% (2001)

82% (1993)

60% (1996)

80% (2004)

71% (2005)

0% (2001)

53% (2000)

67% (1999)

78% (1995)

78% (2006)

70% (2002)

81% (1981)

57% (1985)

69% (1997)

82% (1999)

56% (1998)

78% (1998)

57% (2003)

70% (1994)