54% (2004)

53% (2003)

45% (2001)

72% (2006)

39% (2004)

63% (2006)

55% (2005)

72% (1995)

60% (2011)

50% (2005)

60% (2008)

38% (2010)

62% (2004)

61% (2004)

58% (2007)

62% (2009)

65% (2007)

58% (1996)

45% (2007)

50% (2005)