50% (2003)

55% (2009)

70% (1992)

70% (2010)

75% (2004)

56% (2002)

54% (2005)

80% (1994)

58% (2008)

80% (2004)

70% (1998)

64% (2002)

0% (2006)

61% (2001)

38% (2000)

65% (1999)

0% (1999)

0% (2006)

0% (2005)

20% (1997)