53% (1991)

49% (1989)

50% (1993)

57% (1996)

44% (1994)

50% (1990)

43% (1992)

73% (1995)

70% (1994)

10% (1991)

47% (1997)

63% (1998)

54% (1993)

57% (1990)

100% (1997)

60% (1997)

40% (1991)

0% (1989)

42% (1993)

42% (1994)