Production
| Year | Volume | Number |
|---|---|---|
| 2025 | 35 | 3 articles |
| 2024 | 34 | 29 articles |
| 2023 | 33 | 34 articles |
| 2022 | 32 | 35 articles |
| 2021 | 31 | 36 articles |
| 2020 | 30 | 37 articles |
| 2019 | 29 | 34 articles |
| 2018 | 28 | 26 articles |
| 2017 | 27 | 28 articles special issue |
| 2016 | 26 | 1 2 3 4 |
| 2015 | 25 | 1 2 3 4 |
| 2014 | 24 | 1 2 3 4 |
| 2013 | 23 | 1 2 3 4 |
| 2012 | 22 | 1 2 3 4 |
| 2011 | 21 | 1 2 3 4 |
| 2010 | 20 | 1 2 3 4 |
| 2009 | 19 | 1 2 3 |
| 2008 | 18 | 1 2 3 |
| 2007 | 17 | 1 2 3 |
| 2006 | 16 | 1 2 3 |
| 2005 | 15 | 1 2 3 |
| 2004 | 14 | 1 2 3 |
| 2003 | 13 | 1 2 3 |
| 2002 | 12 | 1 2 |
| 2001 | 11 | 1 2 |
| 2000 | 10 | 1 2 |
| 1999 | 9 | 1 2 special issue |
| 1998 | 8 | 1 2 |
| 1997 | 7 | 1 2 |
| 1996 | 6 | 1 2 |
| 1995 | 5 | 1 2 |
| 1994 | 4 | 1 2 special issue |
| 1993 | 3 | 1 2 |
| 1992 | 2 | 1 2 |
| 1991 | 1 | 1 2 |