43% (1998)

50% (1991)

37% (1994)

40% (1994)

44% (1998)

46% (1991)

49% (1994)

46% (1996)

52% (1994)

61% (1993)

47% (1991)

48% (1998)

47% (1995)

49% (1995)

59% (1993)

48% (1995)

55% (1994)

60% (1991)

67% (1995)

73% (1994)