78% (2004)

70% (2008)

52% (2008)

67% (2008)

54% (2004)

76% (2007)

71% (2004)

69% (2006)

69% (2007)

59% (2004)

63% (2007)

57% (2002)

62% (2005)

53% (2005)

62% (2001)

70% (2007)

37% (2003)

60% (1978)

35% (2004)

59% (1980)