53% (2005)

79% (1999)

55% (2006)

59% (2005)

55% (2003)

57% (2005)

60% (2003)

56% (2002)

64% (2004)

0% (1990)

49% (2001)

0% (2006)

0% (1999)

30% (1990)

38% (2003)

0% (1990)

44% (2004)

62% (1988)

0% (2001)

0% (2004)