67% (2011)

57% (1949)

39% (1983)

51% (2008)

52% (2007)

41% (1984)

55% (1995)

60% (1984)

35% (1976)

0% (1950)

60% (1995)

47% (2006)

27% (1986)

54% (1974)

60% (1972)

67% (1964)

71% (1949)

35% (1987)

56% (1979)

45% (1989)