75% (2005)

70% (2004)

54% (2002)

56% (2004)

56% (2005)

51% (2008)

48% (2003)

76% (2002)

32% (2001)

38% (2001)

53% (2009)

41% (2009)

43% (2007)

44% (2002)

47% (2010)

62% (2006)

79% (2007)

42% (2004)

64% (2002)

58% (2006)