38% (2004)

48% (1997)

42% (1995)

30% (2000)

51% (1997)

31% (2003)

45% (1996)

51% (1997)

46% (1998)

23% (1998)

47% (1999)

38% (1998)

51% (1997)

51% (1996)

33% (1998)

46% (1997)

33% (1997)

57% (1998)

18% (1996)

40% (1998)