38% (1997)

43% (1995)

35% (1996)

46% (1996)

56% (1994)

49% (1995)

44% (1996)

55% (1997)

43% (1997)

34% (1996)

32% (1999)

47% (1995)

38% (1999)

0% (1998)

39% (2005)

37% (2008)