39% (2004)

50% (2009)

63% (2001)

56% (2010)

55% (2005)

48% (1998)

45% (2011)

0% (2003)

55% (2011)

43% (2013)

59% (2011)

42% (2003)

34% (2008)

35% (2001)

0% (1999)

46% (1997)

0% (1998)

45% (2007)

18% (2009)

28% (2009)