60% (2007)

66% (1985)

40% (2009)

56% (1977)

62% (1971)

60% (2002)

53% (1973)

57% (1985)

47% (1997)

47% (2016)

60% (1981)

55% (1987)

58% (1975)

0% (1976)

60% (1992)

57% (1974)

25% (1969)

71% (1984)

40% (1975)

48% (1982)