63% (1996)

61% (1992)

63% (2002)

49% (2003)

59% (1999)

39% (2000)

68% (1995)

49% (2003)

58% (1998)

60% (1999)

60% (2004)

65% (2003)

65% (1992)

62% (1993)

53% (2002)

65% (1993)

71% (2000)

46% (1994)

71% (1999)

61% (2001)