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Table 1 Summary of overlap and reuse statistics over time.

From: How orthogonal are the OBO Foundry ontologies?

  September 2009 March 2010 September 2010
Total terms 272,168 311,351 318,872
Reused terms 10,972 (4.0%) 13,458 (4.3%) 17,067 (5.4%)
Overlap terms 9,598 (3.5%) 9,566 (3.1%) 9,992 (3.1%)
  1. The table shows the number of terms, and the number of overlapping and reused terms for the three snapshots: September 2009, March 2010, September 2010