35% (1995)

61% (1999)

48% (1995)

42% (1996)

43% (1994)

46% (1998)

45% (1996)

32% (1998)

42% (1995)

45% (1993)

34% (1993)

44% (2000)

51% (1992)

53% (1998)

41% (1994)

48% (1996)

31% (1997)

50% (1993)

47% (1995)

48% (1997)