66% (2007)

41% (2013)

63% (2017)

65% (2003)

50% (2006)

58% (2004)

45% (2009)

58% (2012)

62% (2014)

61% (2015)

41% (2014)

40% (2010)

60% (2005)

43% (2011)

52% (2006)

54% (2006)

44% (2009)

53% (2002)

72% (2006)

31% (2002)