72% (2009)

82% (2006)

75% (1990)

76% (2006)

79% (1993)

69% (1998)

70% (2001)

69% (1992)

65% (2014)

63% (2004)

47% (1986)

72% (2000)

67% (2002)

71% (1997)

62% (2011)

68% (1997)

65% (2000)

71% (1997)

64% (2002)

67% (1999)