60% (2007)

66% (1985)

40% (2009)

70% (1984)

61% (2002)

56% (1977)

54% (1973)

55% (1985)

55% (2018)

58% (1975)

51% (2008)

40% (1977)

50% (2003)

40% (1979)

50% (1987)

60% (1981)

47% (2016)

58% (1974)

47% (1978)

68% (1978)