TRAIL statistics are updated every six months, generally in January and July. Some statistics reported below are for the most recent six months, while others are cumulative.
The statistics below are current as of January 2, 2020.
Cumulative Statistics
| Number of TRAIL records in the HathiTrust Digital Library | 56,051 |
| Number of TRAIL records in the University of North Texas Digital Library | 27,184 |
| Total number of TRAIL records | 83,235 |
Statistics for the most recent six-month period (July - December 2019)
Current Statistics (as of Jan. 2, 2020)
| Number of TRAIL institutional members | 51 |
| Number of TRAIL personal members | 13 |
Definitions
Number of reports processed for digitization
The number of reports for which the University of Arizona has created catalog/metadata records prior to those reports being digitized and eventually made publicly available.
Usage of UNT-located TRAIL content
The number of uses of the TRAIL reports stored in the University of North Texas (UNT) Digital Library. It is not yet technically possible to provide similar usage statistics for the TRAIL content stored in the HathiTrust Digital Library, TRAIL’s other digitization/preservation partner.
Number of TRAIL search interface sessions
The number of times individual IP/browser combinations accessed the TRAIL search interface for up to 30 minutes.
Number of TRAIL search interface users
The number of individual IP/browser combinations that access the TRAIL search interface.
