80% (1971)

68% (1969)

58% (1982)

15% (1979)

30% (1974)

0% (1991)

60% (1971)

23% (1998)

50% (1995)

20% (1995)

10% (1992)

64% (1969)

30% (1993)

60% (1988)

58% (1976)

68% (1966)

43% (1996)

70% (1984)

70% (1971)

60% (1973)