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Number of papers by equipment subcategory per year
| Subcategory | 1982–2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | Total |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AEDs | 2 | 1 | 0 | 5 | 3 | 0 | 1 | 1 | 2 | 1 | 4 | 5 | 1 | 6 | 5 | 5 | 8 | 7 | 11 | 6 | 16 | 90 |
| Drones | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 5 | 6 | 4 | 6 | 22 |
| AEDs and Drones | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 4 | 3 | 2 | 8 | 19 |
| Total | 2 | 1 | 0 | 5 | 3 | 0 | 1 | 1 | 2 | 1 | 4 | 5 | 1 | 6 | 5 | 6 | 10 | 16 | 20 | 12 | 30 | 131 |
