34% (1993)

53% (1998)

52% (1994)

53% (1999)

35% (1992)

35% (1990)

43% (1997)

40% (1997)

50% (1993)

53% (1999)

20% (1990)

46% (1993)

53% (1996)

49% (1998)

50% (1993)

48% (1995)

41% (1994)

40% (1994)

62% (1994)

30% (1998)