0% (2002)

70% (1989)

50% (1975)

60% (1987)

68% (1996)

67% (1992)

75% (1982)

50% (1998)

80% (1984)

0% (1992)

69% (1964)

0% (1993)

10% (1996)

60% (1980)

55% (1956)

0% (1981)

0% (1989)

63% (1980)

90% (1990)

70% (1983)