82% (1995)

53% (2004)

69% (2011)

69% (1995)

73% (2010)

69% (2012)

63% (2013)

65% (1997)

61% (2009)

66% (1997)

63% (2005)

67% (2008)

67% (1999)

66% (1996)

75% (2005)

69% (1993)

66% (1998)

41% (2001)

68% (1994)

68% (1999)