52% (1992)

31% (1991)

54% (1972)

79% (1981)

49% (2005)

78% (2016)

53% (1993)

68% (2006)

72% (1969)

69% (1960)

61% (1994)

76% (1990)

70% (2014)

71% (2007)

83% (1969)

61% (2011)

81% (2016)

70% (1994)

75% (2010)

75% (1947)