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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 2,519 139 - 2 -
Biblios 72,373,279 1,204,222 110,486 57,622 15,968
Authorities 79,110,827 1,935,064 149,242 62,986 5,852
Items 102,705,657 1,365,542 185,275 81,772 18,994
Patrons 11,696,329 258,210 26,235 9,312 799
Issues 306,107,179 13,247,191 930,743 243,716 4,041