65% (1990)

68% (1997)

50% (2003)

50% (2005)

0% (1998)

44% (2002)

0% (1999)

60% (2007)

0% (2003)

63% (2006)

0% (1998)

71% (1996)

72% (2003)

55% (2001)

54% (2004)

62% (1990)

0% (1989)

53% (1992)

68% (1994)

38% (1998)