40% (1998)

38% (1996)

49% (1997)

52% (1997)

46% (1998)

36% (1995)

38% (2004)

51% (1997)

39% (1996)

30% (2000)

42% (1996)

46% (1995)

48% (1997)

42% (1999)

40% (1998)

32% (1996)

42% (1998)

46% (1997)

29% (2003)

40% (1998)