70% (1999)

74% (2006)

60% (2003)

53% (2003)

88% (2007)

28% (1998)

54% (1995)

69% (1994)

59% (2010)

0% (2006)

63% (2002)

70% (2001)

55% (1999)

57% (2006)

0% (2002)

73% (2002)

63% (2005)

50% (2004)

60% (2006)

70% (2004)