Individual Return on Investment Calculator

Please enter the number of times you use the following library services each month

Your Use	Library Services	Value of Services
	Books Borrowed per Month	$
	Magazines Borrowed per Month	$
	Movies Borrowed per Month	$
	Audio Books Borrowed per Month	$
	Music CDs Borrowed per Month	$
	Cake Pans Borrowed per Month	$
	In-Library Magazine Use per Month	$
	Interlibrary Loans per Month	$
	Meeting Rooms Use (Hours per Month)	$
	Program/Class Attended per Month - Adult	$
	Program/Class Attended per Month - Teen	$
	Program/Class Attended per Month - Child	$
	Computer Use (Hours per Month)	$
	Databases Used per Month	$
	Reference Questions Asked per Month	$
	Books Returned via Open Access	$
	Library Resources In-House (Hours per Month)	$
Value you receive monthly from your library:		$

For every $1.00 in taxes you invest in your library, you receive $ of value in return*

Where did these numbers come from?
Typical taxpayer contributions are determined from the library's 2009 local income per capita.

*Your personal return on investment is based on your responses and the typical annual tax contribution for North Liberty Community Library. You are seeing a returned value of $ for every one dollar invested!

Values used in the calculations above
Value of a book checked out at a library = $15
Value of a magazine read or checked out at a library= $5
Value of a movie checked out at a library = $7
Value of an audio book = $25
Value of an music CD = $13
Value of cake pans checked out at the library = $10
Value of interlibrary loan = $15
Value of library meeting room per hour = $20
Value of a program, such as a book club, for adults or teens = $10
Value of a program, such as Storytime, for children = $12
Value of a patron spending an hour on a library computer = $12
Value of a reference question = $10
Value of utilizing library resources in-house = $10

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