1999 (Quarter 4)
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1999 (Quarter 3)
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1999 (Quarter 2)
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1999 (Quarter 1)
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1998 (Quarter 4)
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1998 (Quarter 3)
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1998 (Quarter 2)
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1998 (Quarter 1)
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1997 (Quarter 4)
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1997 (Quarter 3)
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1997 (Quarter 2)
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1997 (Quarter 1)
1996 (Quarter 4)
1996 (Quarter 3)
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1996 (Quarter 2)
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1996 (Quarter 1)
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1995 (Quarter 4)
1995 (Quarter 3)
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1995 (Quarter 2)
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1995 (Quarter 1)
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1994 (Quarter 4)
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1994 (Quarter 3)
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1994 (Quarter 2)
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1994 (Quarter 1)
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1993 (Quarter 4)
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1993 (Quarter 3)
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1993 (Quarter 2)
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1993 (Quarter 1)
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1992 (Quarter 4)
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1992 (Quarter 3)
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1992 (Quarter 2)
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1992 (Quarter 1)
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1991 (4 issues)
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1990 (6 issues)
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1989 (6 issues)
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1988 (6 issues)
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1987 (12 issues)
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