66% (2010)

48% (2012)

39% (2014)

63% (2013)

58% (2015)

50% (2015)

60% (2009)

52% (2011)

52% (1995)

52% (2007)

55% (1988)

50% (2009)

41% (2011)

50% (1992)

54% (2014)

46% (2005)

46% (2008)

46% (1992)

41% (2005)

52% (2020)