| Publication Year | Number of Publication | Percentage of Total | Publication year | Number of Publication | Percentage of Total |
| 2022 | 6 | 5% | 2015 | 10 | 9% |
| 2021 | 12 | 11% | 2014 | 1 | 0.9% |
| 2020 | 15 | 14% | 2013 | 4 | 4% |
| 2019 | 10 | 9% | 2012 | 1 | 0.9% |
| 2018 | 17 | 16% | 2011 | 4 | 4% |
| 2017 | 5 | 5% | 2010 | 3 | 2% |
| 2016 | 15 | 14% | 2009 | 2 | 1% |