Table A-1. Changes in the organizational unit listing: 2007–14

Activity 2007 2008 2009 2010 2011 2012 2013 2014olda 2014newa
Units at start of data collection 12,320 12,629 13,166 13,285 13,711 13,785 13,952 14,019 14,019
Units added 1,273 1,215 743 1,039 959 726 620 782 1,275
Units deleted 964 678 624 613 885 559 553 432 449
Units at end of data collection 12,629 13,166 13,285 13,711 13,785 13,952 14,019 14,369 14,845
Net difference 309 537 119 426 74 167 67 350 826