- 19911,319
- 1992 to 19932,268
- 1994 to 19953,667
- 1996 to 19972,732
- 1998 to 19992,176
- 2000 to 20011,784
- 2002 to 2003761
- 2004 to 2005319
- 2006 to 2007241
- 2008 to 2009231
- 2010389
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