43% (1985)

55% (1993)

61% (2000)

58% (1991)

40% (1991)

62% (1986)

63% (2007)

67% (1989)

35% (1999)

38% (1989)

70% (1995)

29% (2009)

45% (1987)

50% (1995)

46% (1997)

45% (2017)

46% (1994)

38% (2001)

50% (2002)

64% (1992)