53% (1997)

50% (1986)

59% (1987)

63% (1989)

53% (2000)

20% (1985)

55% (1990)

42% (1987)

62% (1989)

62% (1987)

66% (1997)

65% (1998)

40% (1986)

0% (1993)

51% (1982)

55% (2000)

40% (1998)

55% (2007)

60% (1998)

35% (1989)