77% (2007)

47% (2005)

63% (2003)

38% (2001)

61% (2010)

67% (2006)

49% (2004)

46% (2006)

54% (2006)

33% (2000)

51% (2003)

34% (1999)

41% (2004)

50% (2004)

43% (2005)

70% (2007)

44% (2002)

53% (2006)

33% (2004)

0% (2005)