60% (2011)

69% (2011)

57% (2009)

54% (2006)

56% (2005)

54% (2011)

40% (2009)

48% (2009)

56% (2013)

63% (2013)

30% (1998)

62% (2003)

44% (2007)

57% (2009)

52% (2003)

62% (2010)

51% (2010)

25% (2000)

20% (2012)

62% (2007)