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 | 2009 | 0 |
| Non-citable documents | 2010 | 0 |
| Non-citable documents | 2011 | 2 |
| Non-citable documents | 2012 | 3 |
| Non-citable documents | 2013 | 3 |
| Non-citable documents | 2014 | 3 |
| Non-citable documents | 2015 | 2 |
| Non-citable documents | 2016 | 3 |
| Non-citable documents | 2017 | 3 |
| Non-citable documents | 2018 | 6 |
| Non-citable documents | 2019 | 13 |
| Non-citable documents | 2020 | 13 |
| Non-citable documents | 2021 | 13 |
| Non-citable documents | 2022 | 6 |
| Citable documents | 2009 | 0 |
| Citable documents | 2010 | 15 |
| Citable documents | 2011 | 39 |
| Citable documents | 2012 | 59 |
| Citable documents | 2013 | 65 |
| Citable documents | 2014 | 64 |
| Citable documents | 2015 | 66 |
| Citable documents | 2016 | 64 |
| Citable documents | 2017 | 60 |
| Citable documents | 2018 | 62 |
| Citable documents | 2019 | 61 |
| Citable documents | 2020 | 63 |
| Citable documents | 2021 | 61 |
| Citable documents | 2022 | 61 |