57% (1997)

55% (1992)

50% (2003)

60% (1998)

70% (1997)

70% (1999)

61% (1996)

63% (2004)

55% (1997)

56% (1994)

64% (1992)

62% (1999)

64% (1993)

60% (2004)

50% (2002)

61% (2001)

61% (2002)

0% (1995)

49% (1999)

72% (2000)