53% (1998)

60% (2009)

59% (2009)

45% (2005)

40% (2004)

65% (2006)

67% (2007)

40% (2001)

70% (2004)

52% (2007)

54% (2005)

67% (2011)

51% (2009)

48% (2007)

27% (2000)

80% (2011)

46% (2004)

40% (2006)

60% (2003)

0% (2011)