80% (2003)

51% (2002)

82% (2006)

70% (1996)

66% (1984)

51% (2004)

50% (2006)

54% (2005)

73% (2010)

53% (2003)

64% (2011)

60% (2010)

100% (2012)

50% (2006)

10% (2009)

0% (2011)

28% (2009)

0% (1970)

0% (2008)

73% (2011)