53% (1960)

76% (1997)

73% (1962)

65% (2009)

65% (1973)

67% (1972)

41% (1972)

82% (2010)

70% (1986)

50% (1964)

54% (2013)

46% (1979)

81% (2013)

77% (1975)

32% (1999)

75% (2011)

66% (1984)

70% (1987)

68% (1979)

81% (1989)