54% (2004)

63% (2006)

60% (2011)

39% (2004)

55% (2005)

65% (2007)

60% (2008)

65% (2001)

45% (2001)

62% (2009)

72% (2006)

58% (1996)

62% (2004)

58% (2007)

60% (1995)

63% (2009)

50% (2005)

48% (2007)

53% (2003)

30% (2003)