59% (2005)

65% (2000)

65% (2003)

65% (2005)

69% (2002)

66% (2004)

67% (2000)

64% (2007)

55% (2007)

56% (2006)

63% (2005)

66% (1999)

64% (1998)

61% (2008)

65% (2007)

61% (2006)

57% (2006)

63% (2005)

60% (2003)

60% (2003)