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 August 31, 2023.

Cumulative Statistics

Number of TRAIL reports available in the HathiTrust Digital Library	62,992
Number of TRAIL items available in the University of North Texas Digital Library	31,578
Total Reports/Items in Repositories	112,722
Total Reports/Items Available	94,570

 

Statistics for the most recent six-month period January-June 2023)

Number of technical reports processed for digitization	2,002
Usage of TRAIL content held at the University of North Texas	570,585
Number of TRAIL search interface sessions	6,424
Number of TRAIL search interface users	5,019

 

Current Statistics (as of July 1, 2023)

Number of TRAIL institutional members	54
Number of TRAIL personal members	15

 

Definitions

Number of reports processed for digitization

The number of reports that Central (U Arizona) completed necessary review and cataloging and shipped for scanning at either HathiTrust (U Michigan) or UNT during the defined period. These materials may not yet be scanned or publicly available. The number of reports processed is not equal to the number of reports publicly available. 

 

Usage of UNT-located TRAIL content

The number of uses of the TRAIL items 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.