75% (1970)

61% (1983)

50% (1984)

52% (1980)

65% (1968)

50% (2005)

54% (1976)

72% (1982)

0% (2003)

62% (1978)

67% (1986)

80% (1993)

0% (1983)

0% (1978)

60% (1986)

60% (1969)

72% (1999)

0% (1981)

70% (1976)

57% (1983)