46% (1975)

42% (1982)

54% (1984)

66% (1977)

49% (1971)

70% (1998)

38% (1986)

64% (1999)

67% (2020)

72% (2006)

56% (1995)

69% (1970)

70% (2020)

51% (1982)

67% (1996)

62% (2020)

70% (1981)

78% (1952)

60% (2011)

56% (1993)