58% (2005)

71% (1992)

50% (2003)

58% (2008)

59% (2002)

52% (2009)

78% (2004)

70% (2010)

38% (2000)

0% (1999)

64% (1999)

80% (2004)

50% (2009)

0% (2005)

80% (1994)

62% (2001)

70% (2002)

33% (2008)

70% (1998)

20% (1997)