73% (2001)

81% (1998)

40% (2003)

90% (2008)

88% (1998)

60% (2001)

74% (1996)

64% (2000)

65% (2000)

75% (1998)

80% (2006)

57% (1999)

56% (1990)

74% (2005)

72% (2011)

66% (2000)

52% (2003)

10% (2001)

60% (2005)

0% (2002)