75% (1962)

51% (2009)

68% (2005)

64% (2015)

54% (2014)

75% (1964)

64% (1993)

53% (2015)

58% (2014)

60% (2003)

47% (2006)

40% (1947)

79% (1988)

42% (1991)

53% (2008)

59% (1982)

75% (2013)

65% (1977)

63% (1999)

65% (1979)