54% (2004)

45% (2001)

63% (2006)

40% (2004)

62% (2009)

72% (2006)

62% (2008)

55% (2005)

65% (2001)

58% (1996)

60% (2006)

62% (2004)

60% (2011)

50% (2005)

55% (1997)

72% (1995)

65% (2007)

60% (2008)

30% (2008)

35% (2005)