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Download to excel nsf.gov - Appendix Table 1 - NCSES Graduate Students and Postdoctorates in Science and Engineering: 2013 - US National Science Foundation (NSF)
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TABLE A-1. Changes in the organizational unit listing: 2006—13

Activity 2006 2007 2008 2009 2010 2011 2012 2013
Units at start of data collection 12,297 12,320 12,629 13,166 13,285 13,711 13,785 13,952
Units added 397 1,273 1,215 744 1,039 959 726 620
Units deleted 374 964 678 625 613 885 559 553
Units at end of data collection 12,320 12,629 13,166 13,285 13,711 13,785 13,952 14,019
Net difference 23 309 537 119 426 74 167 67

NOTES: The 620 units added to institutions in 2013 include two units that had been noncore units in 2012. They became core schools in 2013.
SOURCE: National Science Foundation, National Center for Science and Engineering Statistics, NSF-NIH Survey of Graduate Students and Postdoctorates in Science and Engineering.
Data from survey cycle Fall 2013, as of 08 August 2014.