72% (2009)

71% (2006)

60% (2008)

65% (2000)

60% (2010)

60% (2000)

62% (2002)

60% (2008)

62% (2003)

42% (2008)

71% (2003)

59% (2006)

65% (1999)

75% (1999)

66% (2002)

66% (2008)

58% (2010)

59% (2001)

69% (2006)

54% (2011)