71% (2011)

61% (2012)

61% (2011)

61% (2015)

60% (2014)

57% (2010)

52% (2013)

40% (2007)

10% (2014)

60% (2016)

57% (2002)

0% (2005)

56% (2006)

54% (2001)

40% (2012)

0% (2013)

60% (2014)

10% (2017)

0% (2003)