44% (1998)

35% (1997)

46% (1997)

50% (1999)

51% (1996)

40% (1999)

20% (1999)

14% (1995)

20% (1998)

29% (2003)

36% (1997)

64% (1998)

53% (1998)

40% (1998)

35% (1998)

17% (1996)

54% (1997)

28% (1997)

39% (1998)

40% (1996)