38% (2005)

53% (2010)

61% (2005)

62% (2010)

60% (2012)

48% (2006)

70% (1989)

51% (2010)

35% (2004)

55% (2007)

35% (2006)

46% (2005)

5% (2009)

0% (1985)

20% (1991)

0% (1970)

0% (1987)

0% (1982)