66% (1985)

60% (2007)

61% (2002)

43% (1982)

40% (2009)

56% (1985)

35% (1975)

69% (1978)

56% (1977)

53% (1976)

55% (1974)

51% (2008)

50% (1984)

47% (2016)

60% (1992)

20% (1981)

45% (1997)

43% (2000)

58% (1963)

57% (1979)