63% (2007)

40% (2005)

58% (2007)

58% (2010)

56% (2003)

55% (2006)

61% (2003)

63% (2005)

65% (2008)

61% (2009)

60% (2003)

59% (2011)

55% (2004)

51% (2006)

59% (2009)

53% (2011)

53% (2005)

56% (2012)

62% (2003)

51% (2005)