54% (1998)

60% (2009)

66% (2007)

59% (2009)

40% (2004)

40% (2001)

65% (2006)

53% (2007)

70% (2007)

66% (2004)

70% (2004)

52% (2009)

49% (2005)

49% (2007)

56% (2005)

40% (2006)

67% (2011)

0% (2008)

20% (2008)

20% (2009)