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WorldShare Interlibrary Loan

OCLC Resource Sharing facts and statistics

Since the introduction of OCLC's first interlibrary loan service in 1979, use of OCLC's resource sharing services has continued to grow. Below are some key statistics about the current use of this service.

Top 1,000 interlibrary loan requests

OCLC has mined data collected through use of OCLC resource sharing services to provide member libraries with lists of the most-requested monographs and journal titles requested through the service. The lists below show the most-requested monographs (books) and journal titles (articles) requested via OCLC Resource Sharing over a one-year period, from 1 July 2012 through 30 June 2013. The Excel spreadsheets of the top 1,000 titles for each format type include the OCLC record number, the title, and the number of request for the item and the OCLC number of the requested item.

Please contact us with suggestions about other resource sharing data of interest to you.

Top reasons for no

We encourage libraries to provide reasons for saying no to interlibrary loan requests as much as possible to provide the borrowing library with this much-needed and valuable piece of information. This list details the top reasons libraries were unable to fill requests. The report covers activity from July 2012 to June 2013.

Reason 2013
IN USE ON LOAN 2,090,781
LACKING 1,122,109
AGED TO NEXT LENDER 929,732
NON CIRCULATING 792,070
AUTO-DEFLECTION: FORMAT TYPE 764,479
NOT OWNED 717,379
UNSPECIFIED 611,195
NOT ON SHELF 556,288
POLICY PROBLEM 464,044
AUTO-DEFLECTION: MULTIPLE REASONS 316,350
OTHER 218,569
BORROWER REFUSED CONDITIONS 208,582
ON ORDER 139,301
DEFLECTION - NOT CURRENTLY A SUPPLIER        
121,816
AUTO-DEFLECTION: AGE OF MATERIAL 120,221
COST EXCEEDS LIMIT 101,714
DEFLECTION - LOCAL HOLDINGS 84,259
NOT LICENSED TO FILL 81,881
VOLUME ISSUE NOT YET AVAILABLE 79,869
BORROWER REFUSED CONDITIONS 42,819
PREFERRED DELIVERY TIME NOT POSSIBLE 30,106
AUTO-DEFLECTION: PROFILED GROUP 25,081
IN PROCESS 25,074
POOR CONDITION 24,919
AGED TO EXPIRED 22,622
AUTO-DEFLECTION: REQUEST TYPE 22,138
AT BINDERY 20,173
AUTO-DEFLECTION: MAXCOST 17,656
REQUESTED DELIVERY SERVICES NOT SUPPORTED 12,091
DEFLECTION - CUSTOM GROUP 9,938
UNSPECIFIED 6,488
NOT FOUND AS CITED 3,918
LOST 3,492
ITEM TOO NEW TO LOAN 2,562
DEFLECTION - E-LICENSE TERM 2,085
PREPAYMENT REQUIRED 1,789
ON RESERVE 1,767
CHARGES 738
DEFLECTION - ITEM ON ORDER 707
ON HOLD 641
LACKS COPYRIGHT COMPLIANCE 395
OFFSITE 240
RESPONDER SPECIFIC 224
LOCATIONS NOT FOUND 73
RETRY ON YYYYMMDD 63
EXPIRY NOT SUPPORTED 21
MANDATORY MESSAGING NOT SUPPORTED 6
AGED TO UNFILLED 5
  9,801,470

Top lending and borrowing libraries

These are lists of the top libraries in the OCLC network for loan requests made and for borrowing requests created. The time frame is from July 2012 to June 2013.

Top 10 lending libraries

Institution name Symbol
University of Chicago
CGU
University of Texas at Austin
IXA
University of Michigan LIbrary EYM
Indiana University
IUL
University of Wisconsin, Madison, General Library System
GZM
University of Illinois
UIU
Texas A & M University
TXA
Minitex MII
Pennsylvania State University
UPM
The Ohio State University OSU

Top 10 borrowing libraries

Institution name Symbol
Mid-Continent Public Library
CMI
Indiana State Library
SHARE
Texas A&M University TXA
University of Michigan Library EYM
San Antonio Public Library
SAP
Indiana University
IUL
University of Chicago
CGU
Pennsylvania State University
UPM
Northwestern University
INU
Denver Publlic Library
DPL

OCLC Resource Sharing growth

The data in this chart shows ILL activity by libraries that use OCLC resource sharing services. It includes the total number of libraries using OCLC Resource Sharing services and the total number of requests created by those libraries. It also includes statistics about the use of Interlibrary Loan Fee Managemenr (IFM) by OCLC Resource Sharing users. Finally, the table shows the current number of libraries that use ILLiad, the ILL management software created by Atlas Systems Inc.

Total number of OCLC ILL users 9,867
Total number of ILL Requests 8,858,368
IFM Users 2,862
IFM Transactions 916,781
IFM ILL charges transferred $ 13,470,052
Libraries using ILLiad 1,200

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WorldShare Interlibrary Loan is available as a stand-alone service or as part of the WorldShare Management Services suite.

Learn more about WorldShare Management Services »

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