71% (2010)

85% (2008)

78% (2004)

53% (2007)

66% (1993)

56% (2001)

66% (1996)

40% (1995)

60% (2005)

76% (2008)

78% (2003)

69% (2010)

70% (2011)

50% (2008)

92% (2009)

71% (2005)

0% (2010)

0% (2004)

0% (2002)

62% (2009)