56% (2005)

74% (2005)

54% (2002)

57% (2004)

71% (2004)

52% (2008)

43% (2007)

32% (2001)

48% (2003)

58% (2006)

40% (2009)

50% (2005)

51% (2009)

43% (2002)

40% (2004)

64% (2009)

77% (2002)

48% (2010)

36% (2001)

47% (2010)