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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 2,671 139 - 2 -
Biblios 72,930,826 1,204,222 109,602 56,977 15,562
Authorities 80,597,630 1,935,064 149,011 62,967 5,651
Items 103,337,787 1,370,033 183,981 80,733 18,811
Patrons 11,756,489 258,210 26,068 9,185 790
Issues 306,902,807 13,247,191 920,812 239,768 3,857