55% (1995)

51% (1997)

49% (1996)

44% (2000)

47% (1995)

49% (1995)

40% (1996)

36% (1994)

45% (1993)

35% (1996)

38% (1994)

36% (1995)

23% (1996)

39% (1995)

46% (1995)

44% (1997)

60% (1999)

40% (1996)

32% (1992)

43% (1994)