62% (2003)

73% (2001)

60% (2004)

61% (2001)

51% (2006)

61% (2006)

55% (2008)

66% (1998)

65% (2004)

59% (2006)

60% (2003)

64% (2001)

70% (2004)

60% (2001)

75% (2003)

59% (2004)

65% (2002)

62% (2002)

66% (1998)

66% (2003)