67% (2005)

83% (1999)

58% (1999)

68% (2005)

69% (2002)

63% (1998)

90% (2011)

87% (1999)

72% (2009)

80% (2001)

64% (2010)

57% (2004)

60% (2002)

68% (2001)

60% (2003)

59% (2007)

57% (2007)