0% (1999)

50% (1977)

77% (1983)

58% (1981)

47% (1999)

30% (1981)

0% (1989)

35% (1999)

40% (1982)

45% (1984)

48% (1986)

45% (2008)

10% (1989)

20% (1983)

0% (1988)

0% (1992)

70% (1980)

25% (1973)

63% (1976)

60% (2005)