66% (1991)

45% (1995)

46% (1995)

55% (1991)

57% (1991)

67% (1993)

25% (1995)

51% (1993)

49% (1992)

49% (1990)

60% (1994)

47% (1993)

32% (1996)

20% (1995)

40% (1995)

30% (1990)

35% (1994)

70% (1996)

60% (1990)

51% (1991)