*Where did these numbers come from? --
Per capita expenditures were collected from Wisconsin's 2009 Public Library Statistics, compiled by the State Division for Libraries, Technology and Community Learning (DLTCL). The return on investment is calculated by dividing each library's annual per capita expenditure by 12 (the number of months) to get a monthly per capita expenditure. The formula then divides the total value received each month by the monthly per capita expenditure.
Note: If you do not live in a community with a public library, the return on investment calculated by this form will most likely be under-valued. If you live in a community with a public library, but choose to use a library in another community, the return on investment calculated by this form may not be accurate.
This calculator is an adaptation of projects by the Maine State Library and Library Research Service, a unit of the Colorado State Library and the Colorado Department of Education that is operated in partnership with the Library and Information Science (LIS) Program, Morgridge College of Education, University of Denver, and the South Central Library System of Wisconsin.