61% (1999)

42% (1999)

43% (1998)

37% (1998)

42% (1998)

36% (1997)

36% (1998)

49% (1999)

10% (1996)

24% (1996)

40% (1999)

44% (1999)

48% (1995)

40% (1997)

25% (1996)

61% (1998)

0% (1999)

43% (1999)

33% (1997)

43% (1995)