64% (2007)

46% (2008)

59% (2009)

54% (2008)

55% (2007)

53% (2007)

37% (2007)

46% (2007)

50% (2007)

51% (2004)

63% (2007)

48% (2007)

64% (2008)

54% (2008)

42% (2008)

44% (2005)

41% (2005)

32% (2009)