| Duke University Libraries Summary Statistics |
| Volumes held (as of June 30 reporting year) | 6,340,456 | 2.71% | 6,172,978 |
| Total Circulation Transactions (initial and renewals, excluding reserves) | 669,321 | -6.52% | 716,027 |
| Reference Transactions (Total, ARL method) | 109,692 | -7.53% | 118,630 |
| Total Items Loaned (ILL) | 33,519 | -9.87% | 37,190 |
| Total Items Borrowed (ILL) | 27,272 | -1.72% | 27,749 |
| Number of monographic volumes purchased | 64,982 | -12.5% | 74,263 |
| Total Staff (FTE) | 322.00 | 22.43% | 263.00 |
| Total Salaries & Wages | $15,712,734 | -10.07% | $17,472,758 |
| Total Library Materials (calculated field) | $9,424,484 | 30.3% | $7,232,738 |
| Total Library Expenditures | $30,484,376 | 0.7% | $30,272,945 |