53% (2005)

62% (2009)

43% (2006)

36% (2001)

55% (2011)

56% (2006)

53% (2001)

52% (2008)

59% (2008)

60% (2007)

45% (2013)

52% (2008)

56% (2012)

60% (2009)

51% (2012)

52% (2000)

53% (2001)

48% (2002)

52% (2003)

55% (2005)