53% (1992)

60% (1992)

72% (1993)

57% (1993)

56% (1991)

57% (1994)

63% (2007)

61% (1992)

65% (1990)

63% (1990)

49% (1997)

69% (1995)

52% (2000)

62% (1996)

62% (1994)

59% (1993)

51% (1999)

53% (1996)

53% (1993)

61% (1992)