50% (1978)

53% (1976)

66% (1989)

58% (1988)

56% (1989)

46% (1986)

37% (1987)

51% (2012)

62% (1985)

60% (1973)

68% (1995)

56% (1975)

65% (1998)

10% (1998)

0% (1974)

60% (1997)

52% (1998)

0% (2012)

41% (1988)

38% (1996)