| Number | Year | Sketches |
|---|---|---|
| 1 | 1975 | 2 |
| 2 | 1976 | 2 |
| 4 | 1978 | 3 |
| 7 | 1981 | 1 |
| 8 | 1982 | 1 |
| 10 | 1984 | 2 |
| 12 | 1986 | 2 |
| 13 | 1988 | 2 |
| 15 | 1989 | 1 |
| 16 | 1990 | 2 |
| 17 | 1991 | 5 |
| 18 | 1992 | 6 |
| 19 | 1993 | 4 |
| 20 | 1994 | 4 |
| 22 | 1996 | 2 |
| 23 | 1997 | 3 |
| 24 | 1998 | 5 |
| 25 | 1999 | 4 |
| 26 | 2000 | 4 |
| 27 | 2001 | 2 |
| 29 | 2003 | 1 |
| 30 | 2004 | 2 |
| 31 | 2005 | 4 |
| 32 | 2006 | 4 |
| 33 | 2007 | 1 |
| 34 | 2008 | 4 |
| 35 | 2009 | 6 |
| 36 | 2010 | 8 |
| 37 | 2011 | 10 |
| 38 | 2012 | 9 |
| 39 | 2013 | 16 |
| 40 | 2014 | 15 |
| 41 | 2015 | 7 |
| 42 | 2016 | 11 |
| 43 | 2017 | 7 |
| 44 | 2018 | 9 |
| 45 | 2019 | 7 |
| 46 | 2020 | 12 |
| 47 | 2021 | 7 |
| 48 | 2022 | 6 |
| 49 | 2023 | 11 |
| 50 | 2024 | 22 |
| 51 | 2025 | 12 |