Statistical Trends

ARL Statistics 2010-11 includes data that describe collections, staffing, expenditures, and service activities for the 126 members of the Association of Research Libraries (ARL). Of these, 115 are university libraries; the remaining 11 are public, governmental, and nonprofit research libraries. ARL member libraries are the largest research libraries in North America, representing 18 Canadian and 108 U.S. research institutions. The academic libraries, which comprise 91% of the membership, include 16 Canadian and 99 U.S. libraries.

The following links contain recently published graphs of some of the most interesting trends emerging from data collected as part of the Statistics & Assessment program:

• ARL University Research Library Investments 2010-11 (PDF), (XLS)
• ARL Non-University Research Library Investments 2010-11 (PDF), (XLS)
• Service Trends in ARL Libraries 1991-2011 (PDF), (XLS)
• Monograph and Serial Costs in ARL Libraries 1986-2011 (PDF), (XLS)
• Supply and Demand in ARL Libraries 1986-2011 (PDF), (XLS)
• Expenditure Trends in ARL Libraries 1986-2011 (PDF), (XLS)
• Resources per Student in ARL University Libraries 1986-2011 (PDF), (XLS)
• Electronic Resources vs Total Materials Expenditures - Yearly Increases in Average Expenditures 1993-2011 (PDF), (XLS)
• Total Enrollment at ARL Universities, 1968-2011 (PDF), (XLS)