Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.
| Documents | Year | Value |
| Non-citable documents | 2008 | 0 |
| Non-citable documents | 2009 | 0 |
| Non-citable documents | 2010 | 0 |
| Non-citable documents | 2011 | 2 |
| Non-citable documents | 2012 | 2 |
| Non-citable documents | 2013 | 5 |
| Non-citable documents | 2014 | 15 |
| Non-citable documents | 2015 | 34 |
| Non-citable documents | 2016 | 60 |
| Citable documents | 2008 | 4 |
| Citable documents | 2009 | 7 |
| Citable documents | 2010 | 24 |
| Citable documents | 2011 | 51 |
| Citable documents | 2012 | 77 |
| Citable documents | 2013 | 128 |
| Citable documents | 2014 | 359 |
| Citable documents | 2015 | 722 |
| Citable documents | 2016 | 1153 |