60% (2012)

55% (2007)

35% (2004)

52% (2007)

0% (1985)

51% (2010)

30% (2003)

38% (2005)

46% (2005)

35% (2006)

70% (1989)

45% (2006)

69% (2001)

20% (1991)

0% (1987)

5% (2009)

0% (1982)