50% (1986)

42% (1987)

53% (1988)

61% (1999)

49% (1995)

51% (1988)

51% (1986)

53% (2002)

47% (1993)

43% (1987)

100% (1996)

46% (1987)

60% (1999)

58% (1981)

68% (1995)

42% (2002)

48% (1997)

65% (1987)

45% (1995)

57% (1997)