62% (2011)

64% (2008)

37% (2005)

55% (2004)

64% (2010)

65% (1994)

63% (2010)

65% (2004)

55% (1996)

55% (1994)

49% (1996)

44% (1992)

58% (2004)

66% (2003)

78% (2001)

74% (2006)

53% (2003)

49% (2008)

66% (1997)

48% (2011)