66% (2010)

63% (2013)

58% (2015)

52% (2020)

49% (2012)

58% (2008)

46% (2008)

49% (2010)

60% (2009)

51% (2016)

42% (2011)

39% (2014)

50% (2018)

54% (2014)

45% (2008)

43% (2009)

47% (2015)

55% (2019)

50% (2007)

52% (2006)