60% (1988)

75% (1991)

56% (1982)

66% (2001)

0% (2001)

74% (1981)

73% (2005)

60% (1990)

40% (1990)

58% (2003)

50% (1983)

50% (1972)

0% (1991)

55% (1979)

30% (1987)

50% (1986)

45% (1982)

50% (1987)

35% (1979)

72% (1975)