ARL Rankings
Using a variety of metrics such as accessibility, materials expenditures, volumes held, and staff size, the Association for Research Libraries (ARL) has consistently ranked the UM library system among the top ten in the nation. Although Michigan ranks 8th among academic libraries as to total volumes held, it ranks 1st for unique titles held among all institutions which report that statistic.
| Year | Volumes Held | Volumes Added Gross | Current Series | Total Expenditures | Total Staff | Investment Index Score | Investment Index Rank |
|---|---|---|---|---|---|---|---|
| 2009 | 9,575,256 | 176,363 | 70,047 | $53,134,323 | 584 | 1.65 | 5 |
| 2008 | 9,175,102 | 146,729 | 69,457 | $51,599,110 | 570 | ** | 8 |
| 2007 | 8,414,070 | 157,552 | 71,788 | $50,591,407 | 585 | ** | 8 |
| 2006 | 8,273,050 | 176,998 | 134,446 | $49,053,402 | 574 | * | 8 |
| 2005 | 8,133,917 | 189,373 | 124,809 | $47,113,239 | 473 | 1.24 | 5 |
| 2004 | 7,958,145 | 171,154 | 67,554 | $46,737,671 | 475 | 0.98 | 8 |
| 2003 | 7,800,389 | 173,081 | 74,664 | $48,193,379 | 497 | 1.13 | 5 |
| 2002 | 7,643,203 | 182,670 | 69,218 | $43,357,616 | 514 | 1.05 | 6 |
| 2001 | 7,484,343 | 172,287 | 68,684 | $43,558,787 | 501 | 1.05 | 6 |
| 2000 | 7,348,360 | 179,392 | 68,798 | $41,368,972 | 459 | 1.06 | 6 |
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