- 1998 to 199975
- 2000 to 2001115
- 2002 to 2003115
- 2004 to 2005126
- 2006 to 2007106
- 2008 to 200978
- 2010 to 2011404
- 2012 to 2013373
- 2014 to 2015117
- 2016 to 2017203
- 201825
The preservation of the Duke University Libraries Digital Collections and the Duke Digital Repository programs are supported in part by the Lowell and Eileen Aptman Digital Preservation Fund