47% (2005)

52% (2002)

36% (1998)

55% (2005)

36% (2000)

50% (2004)

46% (1997)

50% (2003)

43% (2002)

56% (2006)

45% (2002)

32% (1997)

51% (2000)

52% (2003)

49% (1999)

56% (2012)

48% (1999)

46% (2005)

38% (2002)

41% (2005)