55% (1999)

45% (1999)

49% (2002)

49% (1992)

29% (2009)

0% (2002)

0% (1999)

0% (1970)

0% (1990)

70% (1998)

70% (2005)

10% (1993)

0% (2005)

60% (1990)

38% (2008)