55% (2004)

62% (2011)

37% (2005)

64% (2008)

64% (2010)

49% (1996)

74% (2006)

48% (2011)

53% (2003)

62% (1998)

68% (1994)

63% (2010)

55% (1996)

48% (2004)

58% (2004)

48% (2005)

65% (1994)

66% (1997)

49% (2008)

49% (2001)