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 | 3 |
| Non-citable documents | 2012 | 4 |
| Non-citable documents | 2013 | 6 |
| Non-citable documents | 2014 | 6 |
| Non-citable documents | 2015 | 16 |
| Non-citable documents | 2016 | 31 |
| Citable documents | 2008 | 7 |
| Citable documents | 2009 | 11 |
| Citable documents | 2010 | 65 |
| Citable documents | 2011 | 149 |
| Citable documents | 2012 | 233 |
| Citable documents | 2013 | 295 |
| Citable documents | 2014 | 414 |
| Citable documents | 2015 | 761 |
| Citable documents | 2016 | 976 |