62% (2003)

62% (2001)

60% (2004)

51% (2006)

66% (1998)

73% (2001)

60% (2003)

75% (2003)

59% (2006)

60% (2001)

56% (2004)

71% (2004)

67% (2007)

65% (2001)

65% (2002)

65% (2004)

62% (2006)

66% (2007)

55% (2008)

62% (2002)