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Citations Added to MEDLINE® by Fiscal Year

The graph and chart below reflect the number of indexed1 citations added to MEDLINE during each fiscal year since 1995.

bar graph of number of indexed citations added to MEDLINE for fiscal years 1995 to 2013

Fiscal Year# Citations
2013 734,052
2012 760,903
2011 724,831
2010 699,420
2009 712,675
2008 671,904
2007 670,943
2006 623,089
2005 606,000
2004 571,000
2003 526,000
2002 502,000
2001 463,000
2000 442,000
1999 434,000
1998 411,921
1997 519,012
1996 322,8252
1995 392,354

The U.S. Government Fiscal Year (FY) runs from October 1 - September 30.

1Indexed citations are those citations selected for MEDLINE that have completed processing and indexing with current MeSH® (Medical Subject Headings®). Indexed citations have a status of MEDLINE. This number does not include OLDMEDLINE subset citations that are converted to MEDLINE status as part of the MeSH mapping project, effective FY 2007 forward.

2There was a data entry and concomitant indexing backlog resulting from the General Services Administration Board of Contract Appeals' suspension of the NLM editing and data entry contract from late February 1996 to late April 1996. The large backlog was eliminated in early April 1997. This caused fewer records to be added during FY 1996 and a greater number added in FY 1997.