54% (2006)

55% (2005)

46% (2008)

55% (2012)

54% (1999)

57% (2012)

51% (2012)

52% (2013)

46% (2005)

47% (2009)

60% (2009)

40% (1994)

65% (2007)

53% (1999)

53% (2001)

52% (2009)

53% (2005)

40% (2009)

51% (2002)

46% (1997)