52% (1970)

60% (2007)

45% (1982)

64% (1979)

56% (2010)

63% (1986)

69% (1981)

68% (1988)

43% (1988)

56% (1988)

60% (2018)

60% (2004)

51% (1970)

52% (1988)

50% (2006)

51% (1982)

44% (2009)

47% (1973)

53% (1982)

0% (1979)