56% (1993)

75% (1992)

59% (1995)

56% (1994)

49% (2000)

47% (1997)

56% (1996)

53% (1992)

44% (1996)

48% (1993)

49% (1995)

50% (1993)

44% (1995)

50% (1998)

44% (1999)

62% (1995)

53% (1993)

43% (1998)

53% (1991)

59% (1997)