45% (1990)

69% (1990)

55% (1994)

56% (1989)

63% (1990)

42% (1990)

49% (1990)

100% (1992)

51% (1991)

39% (1992)

47% (1992)

42% (1993)

23% (1992)

54% (1984)

40% (1994)

42% (1991)

49% (1989)

39% (1991)

60% (1993)

90% (1990)