61% (1978)

45% (1998)

75% (2006)

67% (1957)

60% (2008)

57% (2004)

74% (2004)

61% (2018)

51% (2001)

67% (1993)

68% (2014)

65% (1992)

61% (1939)

61% (1997)

62% (2010)

54% (2018)

62% (1985)

64% (1992)

58% (1992)

61% (1982)