70% (1991)

80% (2013)

65% (1973)

80% (1996)

70% (2005)

47% (1997)

69% (2005)

83% (1997)

74% (2005)

65% (2012)

56% (1979)

81% (1982)

70% (2009)

71% (2010)

79% (2007)

81% (2005)

54% (1960)

40% (2019)

0% (2002)

86% (2004)