64% (1973)

0% (2003)

70% (1997)

53% (1990)

64% (1989)

62% (2002)

62% (1989)

70% (1983)

63% (1992)

50% (1982)

0% (1989)

50% (1972)

47% (1993)

90% (1981)

60% (1998)

58% (1985)

0% (2009)

0% (1976)

67% (1977)

48% (1992)