67% (2006)

47% (2013)

68% (2003)

61% (2008)

66% (2007)

53% (2002)

56% (2006)

60% (2005)

73% (2004)

54% (2005)

51% (2009)

61% (2007)

61% (2011)

69% (2001)

62% (2007)

51% (2000)

64% (2006)

55% (1998)

58% (2005)

45% (2002)