52% (2006)

34% (2004)

43% (2004)

53% (2007)

49% (2004)

37% (2007)

46% (2008)

59% (2010)

36% (2011)

50% (2010)

60% (2009)

60% (2004)

49% (2004)

41% (2010)

20% (2002)