51% (1978)

58% (1983)

67% (1992)

56% (1977)

46% (1979)

63% (1984)

50% (1996)

64% (1982)

61% (1982)

49% (2018)

60% (1991)

59% (1981)

0% (2000)

50% (1989)

20% (1995)

70% (1994)

60% (1975)

30% (1976)

58% (1990)

40% (1979)