44% (1994)

49% (1971)

53% (1996)

69% (1973)

56% (1972)

75% (1973)

62% (1972)

73% (1972)

68% (1971)

42% (1998)

64% (1971)

55% (1980)

56% (1972)

30% (1982)

54% (1983)

59% (1984)

43% (1992)

66% (1972)

70% (1972)

66% (1980)