76% (2004)

60% (2011)

66% (2008)

55% (2008)

73% (2015)

60% (2004)

72% (2005)

54% (2000)

68% (2006)

62% (2010)

67% (2005)

53% (2003)

56% (2003)

64% (2002)

62% (2006)

60% (2006)

66% (2007)

58% (2001)

62% (2007)

47% (1999)