61% (2017)

57% (2003)

70% (2001)

68% (2012)

61% (2008)

50% (2007)

58% (2006)

59% (2011)

60% (2010)

57% (2009)

52% (2007)

61% (2009)

45% (2008)

60% (2006)

57% (2009)

0% (2010)

0% (2005)