72% (2011)

0% (1997)

81% (2014)

79% (2003)

82% (2012)

74% (2010)

67% (2017)

93% (2017)

78% (2001)

70% (1973)

56% (1996)

50% (2011)

69% (2004)

64% (2005)

70% (1974)

75% (1971)

70% (1996)

72% (1969)

0% (1997)

50% (2006)