60% (1991)

85% (2005)

78% (2012)

77% (2013)

97% (1994)

80% (2011)

52% (2002)

75% (2007)

72% (2009)

70% (1995)

0% (2004)

87% (2006)

91% (2014)

0% (1993)

72% (2009)

0% (2008)

69% (2004)

77% (2005)

78% (2010)

81% (2009)