60% (2001)

50% (1990)

58% (1988)

61% (2002)

76% (1992)

67% (2000)

0% (2007)

88% (2000)

70% (2006)

83% (2003)

78% (1998)

45% (2011)

79% (2009)

68% (2014)

0% (1988)

71% (2009)

77% (2005)

22% (1993)

78% (1997)

35% (2004)