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This website displays Koha ILS usage statistics. With permission from the libraries, the following data has been collected from their installed systems. Any information not stored anonymously has been allowed by the library.

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Some numbers from the libraries sharing data
Total Largest Standard deviation Average Median
Libraries 3,648 647 - 3 -
Biblios 83,915,527 1,204,222 116,720 58,971 15,734
Authorities 90,282,216 1,935,064 152,324 63,445 5,584
Items 118,147,831 1,646,573 191,065 83,027 18,894
Patrons 13,364,091 261,211 26,592 9,391 784
Issues 342,096,476 13,481,803 931,181 240,405 3,444