51% (1978)

59% (1983)

67% (1992)

61% (1982)

56% (1977)

65% (1982)

46% (1979)

20% (1995)

60% (1991)

63% (1984)

40% (1979)

59% (1981)

49% (2018)

46% (1980)

0% (2000)

52% (1986)

50% (1989)

50% (1994)

57% (2001)

58% (1990)