67% (1973)

53% (1992)

55% (2004)

0% (1992)

0% (1980)

50% (1975)

61% (1974)

90% (2010)

64% (1982)

60% (1996)

62% (1985)

58% (1980)

0% (1992)

85% (1979)

10% (2013)

0% (1981)

70% (1982)

33% (1978)

58% (1978)

60% (1975)