53% (1993)

45% (1986)

55% (1981)

55% (1999)

50% (1994)

50% (1993)

58% (1991)

35% (1987)

57% (1997)

43% (1992)

32% (2004)

40% (1988)

50% (1994)

38% (1994)

50% (1990)

50% (1993)

53% (1995)

50% (1994)

50% (1986)

56% (1996)