Compact Disks

Volume, Title, and Unique Books data collected on May 31, 2009.
Circulation statistics for the ALC fiscal year ending May 31, 2009.

Volume Count and Average Age

Counts and average ages of volumes (individual barcoded items) in Compact Disks. This count only includes bound monographic materials.

	ACU	APL	HSU	McM	HPU	ALC
1400-1699
1700-1799
1800-1899
1900-1909	3	4	1		2	10
1910-1919
1920-1929
1930-1939
1940-1949
1950-1959	3	1	2			6
1960-1969	10	11	6		3	30
1970-1974	20	19	3		5	47
1975-1979	21	31	7		11	70
1980-1984	77	90	59		71	297
1985-1989	349	338	481		267	1,435
1990-1994	618	671	1,038		233	2,560
1995-1999	1,111	1,440	955		76	3,582
2000-2004	1,204	3,510	714		80	5,508
2005	590	948	167		3	1,708
2006	455	998	133		2	1,588
2007	249	1,030	100		3	1,382
2008	36	977	4		1	1,018
2009		451				451
Totals	4,746	10,519	3,670	0	757	19,692
Average Age	1999	2002	1996	NA	1990	2000
Percent of Collection	1.61%	3.66%	2.24%	0%	0.95%	2.03%

Title Count and Average Age

Counts and average ages of titles (excludes duplicate copies) in Compact Disks. This count only includes bound monographic materials.

	ACU	APL	HSU	McM	HPU	ALC
1400-1699
1700-1799
1800-1899
1900-1909	2	2	1		2	7
1910-1919
1920-1929
1930-1939
1940-1949
1950-1959	1	1	2			4
1960-1969	7	9	6		3	25
1970-1974	8	16	3		5	32
1975-1979	11	25	6		11	53
1980-1984	51	81	57		69	249
1985-1989	217	299	443		247	1,173
1990-1994	373	590	940		180	2,017
1995-1999	658	1,289	814		62	2,752
2000-2004	521	2,726	634		42	3,878
2005	191	666	138		3	991
2006	248	670	115		2	1,028
2007	128	638	73		3	839
2008	15	609	4		1	627
2009		285				285
Totals	2,431	7,906	3,236	0	630	13,960
Average Age	1998	2001	1996	NA	1990	1999
Percent of Collection	1.02%	4.12%	2.22%	0%	0.88%	2.10%

Unique Books Count and Average Age

Counts and average ages of unique books (titles held by only one ALC library) in Compact Disks. This count only includes bound monographic materials.

	ACU	APL	HSU	McM	HPU
1400-1699
1700-1799
1800-1899
1900-1909	1	1	1		2
1910-1919
1920-1929
1930-1939
1940-1949
1950-1959		1	2
1960-1969	2	8	6		3
1970-1974	2	14	3		5
1975-1979	3	22	5		11
1980-1984	27	73	52		60
1985-1989	122	258	398		221
1990-1994	170	513	841		154
1995-1999	324	1,159	711		43
2000-2004	118	2,126	543		26
2005	59	459	119		2
2006	86	447	98		2
2007	40	386	65
2008	5	363	2
2009		184
Totals	959	6,014	2,846	0	529
Average Age	1997	2001	1995	NA	1989

Total Circulation

A count of charges and renewals for Compact Disks. This count only includes circulation of bound monographs, CDs, videos, and DVDs.

	Patron System
	ACU	APL	HSU	McM	CJC	HPU	Total
ACU Items	195	2	3	2	0	2	204
APL Items	2,598	47,056	884	445	0	0	50,983
HSU Items	3	0	1,644	0	0	0	1,647
McM Items	0	0	0	0	0	0	0
HPU Items	0	0	0	0	0	0	0
Totals	2,796	47,058	2,531	447	0	2	52,834

Circulation by Item Age

A count of charges and renewals for Compact Disks, broken down by item age and item owner. This count only includes circulation of bound monographs, CDs, videos, and DVDs, and only items which have a valid date in their DATE_1 field.

	ACU	APL	HSU	McM	HPU	ALC
1400-1699
1700-1799
1800-1899
1900-1909		10				10
1910-1919
1920-1929
1930-1939
1940-1949
1950-1959	2		1			3
1960-1969	1	59	1			61
1970-1974	1	59	3			63
1975-1979	3	69	1			73
1980-1984	1	238	40			279
1985-1989	17	1,251	229			1,497
1990-1994	29	1,959	468			2,456
1995-1999	67	4,607	394			5,068
2000-2004	58	15,984	307			16,349
2005	11	5,499	102			5,612
2006	9	6,850	49			6,908
2007	2	7,976	52			8,030
2008	3	5,962				5,965
2009		460				460
Totals	204	50,983	1,647	0	0	52,834
Percent of Circulation	0.60%	7.24%	7.61%	0%	0%	6.87%

Non-Circulating Use

A count of Non-Circulating usage for Compact Disks (as recorded by the circulation "Mark Item Used" command). This count only includes bound monographs, CDs, videos, and DVDs.

ACU	APL	HSU	McM	HPU
10	1	642	0	0

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