71% (2011)

40% (2012)

60% (2011)

60% (2014)

60% (2014)

61% (2012)

56% (2006)

58% (2010)

54% (2001)

40% (2007)

0% (2005)

0% (2011)

59% (2015)

0% (2013)

10% (2014)

60% (2016)

57% (2002)

52% (2013)

10% (2017)

0% (2003)