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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 these services.

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 monographs and journal titles most 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 July 1, 2012, through June 30, 2013. The Excel spreadsheets of the top 1,000 titles for each format type include the OCLC record number, the title, the number of requests for the item and the OCLC number of the requested item.

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

Top reasons for no

We encourage libraries to give 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 2013 to June 2014.

Reason 2014
IN USE ON LOAN 1,920,761
LACKING 1,318,557
AUTO-DEFLECTION: FORMAT TYPE 934,574
AGED TO NEXT LENDER 922,818
NOT OWNED 820,631
NON CIRCULATING 803,065
UNSPECIFIED 651,955
NOT ON SHELF 542,733
POLICY PROBLEM 373,674
AUTO-DEFLECTION: MULTIPLE REASONS 357,938
BORROWER REFUSED CONDITIONS (CODE 91) 207,207
ITEM TOO NEW TO LOAN 181,322
OTHER 176,051
AUTO-DEFLECTION: AGE OF MATERIAL 164,402
DEFLECTION - NOT CURRENTLY A SUPPLIER
153,847
UNSPECIFIED 139,386
ON ORDER 132,761
NOT LICENSED TO FILL     
125,671
COST EXCEEDS LIMIT 97,953
DEFLECTION - LOCAL HOLDINGS 92,630
VOLUME ISSUE NOT YET AVAILABLE 84,707
AGED TO EXPIRED 42,608
BORROWER REFUSED CONDITIONS (CODE 77) 42,260
AUTO-DEFLECTION: PROFILED GROUP 33,599
AUTO-DEFLECTION: REQUEST TYPE 31,152
AUTO-DEFLECTION: MAXCOST 26,131
POOR CONDITION 25676
IN PROCESS 25,350
PREFERRED DELIVERY TIME NOT POSSIBLE 22,645
AT BINDERY 17,621
NOT FOUND AS CITED 17,618
OFFSITE 14,315
REQUESTED DELIVERY SERVICES NOT SUPPORTED 13,284
DEFLECTION - CUSTOM GROUP 12,778
DEFLECTION - E-LICENSE TERM 3,141
DEFLECTION - ITEM ON ORDER 2,648
LOST 2,087
ON RESERVE 1,800
ON HOLD 1,776
PREPAYMENT REQUIRED 766
CHARGES 760
LACKS COPYRIGHT COMPLIANCE 485
RESPONDER SPECIFIC 373
EXPIRY NOT SUPPORTED 44
LOCATIONS NOT FOUND 13
MANDATORY MESSAGING NOT SUPPORTED 7
AGED TO UNFILLED 6
RETRY ON YYYYMMDD 6
  10,541,592

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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