78% (1998)

41% (2006)

67% (2005)

62% (2001)

60% (2001)

55% (2001)

45% (1999)

67% (2002)

59% (2002)

61% (1999)

66% (2001)

48% (2000)

67% (2006)

30% (2000)

61% (2005)

40% (2000)

33% (2000)

57% (2002)

53% (1999)

49% (2001)