53% (1990)

72% (1989)

53% (1992)

46% (1974)

66% (1969)

62% (1992)

56% (1964)

100% (1990)

48% (1980)

64% (1953)

44% (2002)

59% (1958)

62% (1984)

65% (1991)

20% (1985)

78% (2000)

47% (1963)

55% (1981)

49% (1970)

47% (1993)