54% (2004)

64% (2006)

39% (2004)

45% (2001)

62% (2004)

60% (2008)

65% (2007)

50% (2005)

60% (2011)

63% (2009)

56% (2005)

65% (2001)

53% (2003)

42% (2010)

62% (2009)

30% (2008)

55% (1997)

52% (2004)

51% (2005)

72% (1995)