74% (1993)

50% (2008)

83% (1997)

62% (2004)

82% (2002)

78% (2013)

72% (2011)

100% (2005)

39% (2005)

100% (2004)

68% (1989)

10% (2007)

60% (1987)

0% (1970)

0% (2003)

60% (1998)

70% (1997)

77% (2000)

57% (2002)

80% (2002)