67% (1999)

60% (2001)

51% (1990)

70% (1937)

51% (2005)

65% (2008)

54% (2000)

73% (2006)

66% (1974)

71% (1956)

74% (2018)

62% (2005)

58% (1979)

58% (2006)

74% (1947)

54% (2002)

66% (1995)

59% (1996)

57% (1960)

57% (2000)