Compact Disks

Volume, Title, and Unique Books data collected on May 31, 2004.
Circulation statistics for the ALC fiscal year ending May 31, 2004.

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
1600-1699
1700-1799
1800-1899
1900-1909	3	3	1			7
1910-1919
1920-1929
1930-1939
1940-1949
1950-1959		1	1			2
1960-1969	6	10	6			22
1970-1974	12	28	2			42
1975-1979	10	42	3			55
1980-1984	49	136	42	2		229
1985-1989	219	402	320			941
1990-1994	354	783	663			1,800
1995	134	167	125			426
1996	151	201	110			462
1997	154	284	133			571
1998	138	382	98		1	619
1999	107	416	125			648
2000	246	463	96			805
2001	51	497	42			590
2002	91	538	13			642
2003	57	516	1			574
2004	12	40				52
Totals	1,794	4,909	1,781	2	1	8,487
Average Age	1995	1997	1993	1982	1998	1996
Percent of Collection	0.72%	2.14%	1.21%	0.00%	0.00%	1.02%

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
1600-1699
1700-1799
1800-1899
1900-1909	2	1	1			4
1910-1919
1920-1929
1930-1939
1940-1949
1950-1959		1	1			2
1960-1969	5	10	6			21
1970-1974	3	25	2			30
1975-1979	5	31	3			39
1980-1984	40	112	42	2		192
1985-1989	164	362	298			810
1990-1994	239	659	637			1,505
1995	82	155	125			359
1996	85	184	107			368
1997	89	262	104			453
1998	110	358	95		1	556
1999	84	375	94			546
2000	76	427	96			597
2001	31	431	40			501
2002	40	426	13			479
2003	19	423	1			441
2004	10	27				37
Totals	1,084	4,269	1,665	2	1	6,940
Average Age	1994	1997	1993	1982	1998	1995
Percent of Collection	0.54%	2.60%	1.28%	0.00%	0.00%	1.20%

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
1600-1699
1700-1799
1800-1899
1900-1909	1		1
1910-1919
1920-1929
1930-1939
1940-1949
1950-1959		1	1
1960-1969	3	10	6
1970-1974		22	2
1975-1979	2	25	3
1980-1984	31	98	40	1
1985-1989	118	323	275
1990-1994	154	584	600
1995	45	145	121
1996	56	164	96
1997	59	242	100
1998	83	333	86
1999	57	341	77
2000	36	392	91
2001	8	366	35
2002	19	321	13
2003	2	339
2004	5	15
Totals	679	3,721	1,547	1	0
Average Age	1994	1997	1993	1981	NA

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	466	7	41	2	0	0	516
APL Items	2,699	29,549	727	621	685	2	34,283
HSU Items	7	0	958	3	0	0	968
McM Items	0	0	0	1	0	0	1
HPU Items	0	0	0	0	0	0	0
Totals	3,172	29,556	1,726	627	685	2	35,768

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
1600-1699
1700-1799
1800-1899
1900-1909		11				11
1910-1919
1920-1929
1930-1939
1940-1949
1950-1959		1				1
1960-1969		72	2			74
1970-1974		144	3			147
1975-1979		212	1			213
1980-1984	16	679	26	1		722
1985-1989	57	2,111	238			2,406
1990-1994	107	3,847	336			4,290
1995	64	984	51			1,099
1996	44	1,174	48			1,266
1997	50	1,660	83			1,793
1998	32	2,249	35			2,316
1999	39	2,688	67			2,794
2000	70	3,247	51			3,368
2001	10	4,432	20			4,462
2002	5	6,123	7			6,135
2003	22	4,514				4,536
2004		135				135
Totals	516	34,283	968	1	0	35,768
Percent of Circulation	1.22%	5.25%	4.16%	0.01%	0%	4.87%

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
54	3	520	0	0

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