86% (1992)

26% (1997)

83% (2007)

53% (2004)

37% (1986)

52% (2011)

61% (2012)

72% (2007)

80% (1987)

20% (2001)

60% (2003)

55% (2005)

71% (1992)

65% (2003)

82% (2004)

90% (2001)

90% (1999)

95% (2002)

70% (1991)

0% (2008)