53% (1992)

56% (1993)

59% (1995)

55% (1994)

49% (2000)

46% (1997)

74% (1992)

67% (1994)

46% (1997)

53% (1993)

48% (1995)

56% (1996)

44% (1993)

62% (1995)

46% (1999)

50% (1998)

54% (1991)

51% (1996)

63% (1997)

57% (1994)