48% (1994)

67% (1990)

58% (1993)

62% (1994)

63% (1988)

45% (1995)

45% (1990)

46% (1995)

41% (1994)

48% (1995)

25% (1992)

49% (1995)

53% (1995)

50% (1996)

51% (1995)

49% (1995)

49% (1993)

48% (1994)

44% (1995)

52% (1996)