51% (1997)

54% (1995)

20% (1996)

48% (1995)

50% (1995)

53% (1995)

48% (1996)

33% (1994)

46% (1993)

43% (2000)

34% (1994)

57% (1999)

39% (1995)

40% (1996)

39% (1995)

35% (1996)

32% (1994)

30% (1996)

32% (1992)

42% (1997)