45% (1997)

53% (1998)

53% (1995)

72% (1999)

51% (1993)

45% (1998)

60% (1997)

60% (1994)

38% (1997)

47% (1998)

10% (1997)

50% (1997)

20% (1998)

50% (1995)

0% (1995)