74% (1990)

71% (1998)

54% (1961)

59% (2011)

32% (2000)

77% (1967)

83% (2005)

75% (2013)

81% (2005)

68% (1996)

57% (1992)

67% (1968)

95% (2013)

30% (2001)

71% (1969)

70% (1984)

81% (2001)

60% (2009)

81% (2009)

86% (2004)