61% (1999)

52% (1998)

46% (1999)

49% (1999)

38% (1998)

48% (1995)

41% (1999)

38% (1999)

47% (1998)

61% (1998)

48% (1995)

49% (1996)

32% (1998)

40% (1997)

42% (1998)

28% (1998)

48% (1999)

34% (1996)

43% (1997)

52% (1999)