57% (2004)

61% (2006)

57% (2011)

58% (2011)

58% (2009)

23% (2002)

38% (2011)

54% (2013)

31% (2003)

49% (2010)

43% (2013)

30% (2005)

30% (2006)

46% (2011)

38% (2009)

56% (2014)

27% (2007)

30% (2008)

36% (2004)

42% (2010)