73% (2006)

66% (2020)

62% (1994)

57% (1984)

65% (1958)

69% (1998)

51% (2005)

62% (2005)

56% (1986)

72% (1968)

60% (1992)

66% (1995)

72% (2000)

51% (2000)

72% (1955)

61% (1977)

67% (1945)

53% (1983)

68% (1961)

57% (1982)