69% (2003)

67% (2006)

47% (2013)

66% (2007)

56% (2006)

62% (2008)

73% (2004)

61% (2007)

63% (2007)

63% (2006)

60% (2005)

53% (2002)

70% (2001)

61% (2011)

53% (2009)

50% (2000)

54% (2005)

43% (2002)

57% (1996)

55% (1998)