50% (2009)

51% (2008)

50% (2006)

43% (2011)

55% (2007)

46% (2010)

10% (2009)

47% (2009)

60% (2010)

40% (2011)

35% (2009)

45% (2011)

53% (2006)

60% (2007)

57% (2008)

0% (2006)

60% (2008)

40% (2007)

50% (2006)

0% (2007)