74% (2005)

55% (2000)

53% (1998)

64% (2002)

63% (1999)

44% (2003)

65% (1999)

66% (1999)

55% (2001)

48% (2000)

64% (2007)

52% (2002)

67% (2005)

61% (1999)

29% (1998)

59% (1999)

55% (1999)

70% (1999)

50% (2006)

59% (2002)