38% (2004)

39% (1998)

30% (2000)

51% (1997)

46% (1997)

18% (1996)

31% (2003)

48% (1996)

23% (1998)

42% (1995)

43% (1995)

40% (1996)

33% (1997)

37% (1996)

45% (1996)

32% (1996)

40% (1998)

57% (1998)

53% (1998)

40% (1998)