Items indexed for each publication - research articles and notes, review articles, editorials, meeting presentations, obituaries and book reviews. (Contents such as correspondence and news have not been included.)
| 52 | 2009 |
| 53 | 2010 |
| 54 | 2011 |
| 55 | 2012 |
| 56 | 2013 |
| 57 | 2014 |
| 58 | 2015 |
| 59 | 2016 |
| 60 | 2017 |
| 61 | 2018 |
| 62 | 2019 |