36% (1987)

54% (1984)

38% (2012)

46% (1973)

39% (1984)

38% (1985)

31% (2012)

37% (1976)

50% (1984)

47% (2013)

27% (2013)

0% (2008)

27% (1986)

49% (1983)

50% (1985)

20% (1973)

55% (2006)

0% (2007)