65% (2000)

59% (2005)

65% (2003)

69% (2002)

62% (2006)

63% (2005)

67% (2000)

66% (2004)

66% (2005)

65% (2007)

56% (2007)

63% (2005)

61% (2008)

62% (2011)

60% (2004)

66% (1999)

56% (2006)

61% (2006)

65% (1998)

59% (2003)