61% (1983)

41% (1987)

35% (1987)

63% (1988)

65% (1985)

63% (1988)

61% (1986)

40% (1986)

56% (1988)

55% (1986)

57% (1988)

57% (1988)

50% (1987)

47% (1987)

56% (1987)

56% (1989)

0% (2020)