| Perkins Library Statistics |
| Volume and Title Count Metrics |
| Volumes held (as of June 30 reporting year) | 5,136,246 |
| Volumes held (on June 30 previous year) | 4,989,536 |
| Volumes Added (Net) | 73,037 |
| Volumes Added (Gross) | 73,161 |
| Volumes withdrawn since June 30 previous year (0 or neg #) | -124 |
| Titles Held | 3,325,821 |
| Number of monographic volumes purchased | 63,684 |
| Serial Volumes Added | 9,059 |
| Serial Volumes Withdrawn (0 or neg #) | -300 |
| Serials |
| Current Serials Total | 142,373 |
| Electronic (deduplicated) | 97,863 |
| Print (and other non-electronic format) serials purchased | 7,719 |
| Serials Purchased | 105,582 |
| Freely accessible | 33,895 |
| Print (and other format) - Exchanges, gifts, etc. | 1,651 |
| Government documents | 1,245 |
| Serials Not Purchased | 36,791 |
| Other Materials |
| Manuscripts (count) | 22,548,804 |
| Manuscripts added (count) | 1,452,162 |
| Microform Units | 2,704,142 |
| Government Documents not counted elsewhere | 1,264,760 |
| Computer Files | 41,567 |
| Manuscripts and Archives (linear ft.) | 51,124 |
| Cartographic Materials | 133,621 |
| Graphic Materials | 388,530 |
| Audiovisual Materials |
| Audio Materials | 65,635 |
| Film and Video Materials | 89,073 |
| Expenditures |
| Monographs | $5,016,592 |
| Current Serials | $7,403,763 |
| Other Library Materials | $80,201 |
| Miscellaneous Expenditures | $496,203 |
| Total Library Materials (calculated field) | $6,745,558 |
| Contract Binding | $109,500 |
| Salaries & Wages Professional Staff | $8,219,314 |
| Salaries & Wages Support Staff | $3,349,047 |
| Salaries & Wages Student Assistants | $341,286 |
| Total Salaries & Wages | $11,909,647 |
| Other Operating Expenditures | $4,771,564 |
| Total Library Expenditures | $23,426,769 |
| One-time electronic resource purchases | $508,347 |
| Ongoing electronic resource purchases | $6,237,211 |
| Total Electronic Materials Expenditures | $1,105,545.00 |
| From internal library sources | $324,353 |
| Expenditures From External Sources | $6,088 |
| Bibliographic Utilities, Networks, and Consortia (internal and external) | $330,441 |
| Computer Hardware and Software | $722,968 |
| Document Delivery/Interlibrary Loan | $52,136 |
| Electronic Resources |
| Staffing |
| Professional Staff (FTE) | 136.00 |
| Support Staff (FTE) | 96.00 |
| Student Assistants (FTE) | 13.00 |
| Total Staff (FTE) | 245.00 |
| Circulation |
| Initial Circulation Transactions (excluding reserves) | 380,129 |
| Total Circulation Transactions (initial and renewals, excluding reserves) | 541,221 |
| Returnable loans | 18,200 |
| Non-Returnable loans | 6,247 |
| Total Items Loaned (ILL) | 24,447 |
| Returnable Received | 17,577 |
| Non-Returnable Received | 7,323 |
| Total Items Borrowed (ILL) | 24,900 |
| Gate Count in a Typical Week | 75,715 |
| Services |
| Reference Transactions (Total, ARL method) | 90,617 |
| Staffed Service Points | 9 |
| Weekly Public Service Hours | 149 |
| Presentations to Groups | 614 |
| Participants in Group Presentations | 9,582 |