69% (2011)

53% (2004)

82% (1995)

66% (1998)

68% (1994)

69% (1995)

69% (1993)

68% (2000)

66% (1999)

60% (2009)

68% (1999)

63% (2013)

66% (1997)

65% (1996)

66% (2008)

75% (2005)

66% (1997)

73% (2010)

60% (1994)

63% (2005)