71% (2013)

90% (1995)

52% (2010)

54% (2014)

71% (2008)

58% (2008)

15% (2006)

15% (2004)

57% (1997)

55% (2011)

53% (2004)

56% (1980)

30% (2009)

58% (2007)

35% (2005)

43% (2003)

46% (2012)

33% (2010)

50% (2006)

0% (2000)