53% (1997)

35% (1996)

46% (1996)

55% (1995)

45% (1995)

46% (1997)

47% (1996)

39% (1997)

43% (1995)

33% (1996)

38% (1999)

55% (1994)

33% (1999)

41% (2005)

39% (2008)

0% (1998)