44% (2007)

48% (2001)

15% (2001)

60% (2003)

44% (2003)

42% (2002)

35% (2004)

46% (2003)

51% (2004)

38% (2002)

49% (2004)

31% (1998)

46% (2009)

43% (2003)

49% (2001)

29% (1998)

35% (2005)

35% (2004)

32% (2006)

27% (2000)