52% (1995)

56% (2003)

46% (1997)

66% (1992)

65% (1995)

63% (1982)

54% (1985)

65% (1993)

67% (1991)

58% (1986)

60% (1991)

58% (1981)

100% (1986)

59% (1995)

35% (1985)

20% (1997)

0% (1999)

60% (2002)

0% (1998)

15% (1982)