66% (2000)

62% (2002)

49% (2005)

67% (2006)

60% (2006)

43% (2002)

62% (2004)

61% (2002)

61% (2003)

53% (2003)

66% (2005)

70% (2005)

63% (2001)

55% (2002)

47% (2001)

58% (2005)

57% (2001)

45% (2004)

59% (2001)

58% (2002)