71% (1992)

50% (2003)

70% (1998)

70% (2010)

58% (2008)

79% (2004)

55% (2009)

54% (2005)

0% (2005)

0% (1999)

61% (2001)

0% (2006)

64% (1999)

59% (2002)

70% (2002)

33% (2008)

63% (1997)

42% (2002)

38% (2000)

50% (2009)