23% (2005)

30% (1997)

10% (2007)

32% (1991)

23% (1997)

40% (2002)

29% (1997)

55% (1993)

35% (1992)

30% (2004)

37% (1993)

24% (2005)

50% (1994)

35% (1985)

51% (2004)

72% (2006)

0% (2006)

0% (2005)