10% (2012)

37% (2004)

55% (2004)

47% (1998)

10% (2009)

42% (2002)

35% (2005)

50% (2005)

47% (2001)

48% (2009)

38% (2000)

10% (2006)

53% (2000)

30% (2004)

48% (2010)

20% (2009)

47% (2001)

38% (2006)

33% (2002)

68% (2006)