64% (2007)

46% (2008)

59% (2009)

54% (2008)

53% (2007)

63% (2007)

54% (2008)

41% (2005)

55% (2007)

46% (2007)

37% (2007)

51% (2004)

32% (2009)

64% (2008)

50% (2007)

48% (2007)

42% (2008)

44% (2005)