66% (2003)

78% (1991)

50% (1997)

100% (2002)

0% (1998)

59% (2006)

60% (2000)

0% (1994)

60% (1990)

60% (1989)

55% (1993)

58% (2003)

20% (1999)

0% (2007)

50% (1991)

50% (2003)

71% (2006)

53% (2002)

60% (1990)

65% (2001)