Q Group Volume 8
(5 Year Summary: 2011-2015)
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Q Group Volume 6
(5 Year Summary: 2001-2005)
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Q Group Volume 5
(5 Year Summary: 1996-2000)
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Q Group Volume 4
(5 Year Summary: 1991-1995)
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Q Group Volume 3
(5 Year Summary: 1986-1990)
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Q Group Volume 2
(3 Year Summary: 1983-1985)
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Q Group Volume 1
(7 Year Summary: 1976-1982)
Download Volume 1