Rick Anderson provides a very useful and interesting analysis of the use of books from university presses. His conclusions from mining the data from Willard Marriott Library at the University of Utah:
1. general circulation data illustrates a well-established and ongoing trend in large research libraries: the declining circulation of printed books
2. university press titles represent about 9% of total printed books in the library collection
3. university press titles account for about 17.5% of book circulations annually (see Table 2). This is interesting: although UP titles represent quite a small minority of items in the print collection, they punch well above their weight in terms of usage
4. of university press titles that circulate at least once, the percentage that circulates more than once is falling (see Table 2). This is also an interesting and potentially troubling finding: this metric has seen a drop of 8.4% over the three years studied.