69% (1987)

59% (2010)

0% (2014)

67% (1977)

60% (1976)

59% (2011)

60% (2004)

68% (1983)

48% (2013)

64% (1976)

60% (1977)

55% (2011)

61% (1982)

64% (1989)

48% (1998)

90% (1993)

50% (2012)

27% (1992)

53% (1965)

58% (1988)