72% (1996)

56% (1996)

68% (1992)

49% (1994)

43% (1999)

35% (1995)

46% (1995)

73% (1994)

50% (1994)

29% (1996)

67% (1999)

59% (1996)

50% (1995)

46% (1996)

49% (1998)

60% (1995)

28% (1993)

50% (1996)

30% (1999)

50% (1997)