61% (2003)

34% (1999)

75% (2007)

43% (2002)

31% (2000)

70% (2007)

42% (2004)

38% (2001)

47% (2005)

54% (2006)

51% (2003)

44% (2006)

59% (2006)

46% (2004)

61% (2010)

40% (2004)

33% (2004)

43% (2005)

53% (2006)

0% (2005)