59% (2001)

79% (2003)

65% (1999)

53% (2003)

55% (2001)

58% (2004)

0% (1992)

58% (2002)

71% (1997)

51% (2000)

60% (2003)

0% (1993)

42% (1998)

0% (1991)

0% (1985)

0% (1990)

50% (1996)

55% (1997)

45% (1988)

0% (1995)