| Year | Version | Development | Release |
|---|---|---|---|
| 1991 | 22 | c22.0.b / c22.0.b1 | |
| 1992 | c22 / c22g1 / c22g2 | ||
| 1993 | 23 | c23a1 / c23a2 / c23f / c23f1 / c23f2 | |
| 1994 | 24 | c24a1 / c24x1 / c24a2 | c23f3 / c23f4 |
| 1995 | c24a3 | c23f5 | |
| 1996 | 25 | c25a0 / c25a1 / c25a2 | c24b1 / c24b2 / c24g1 |
| 1997 | c25a3 | c24g2 | |
| 1998 | 26 | c26a1 / c26a2 | c25b1 / c25b2 |
| 1999 | 27 | c27a1 / c27a2 | c26b1 / c26b2 |
| 2000 | 28 | c28a1 / c28a2 / c28a3 | c27b1 / c27b2 / c27b3 |
| 2001 | c28a4 | c27b4 | |
| 2002 | 29 | c29a1 / c29a2 | c28b1 / c28b2 |
| 2003 | 30 | c30a1 / c30a2 / c30a2x | c29b0 / c29b1 / c29b2 |
| 2004 | 31 | c31a1 / c31a2 | c30b1 / c30b2 |
| 2005 | 32 | c32a1 / c32a2 | c31b1 / c31b2 |
| 2006 | 33 | c33a1 / c33a2 | c32b1 / c32b2 |
| 2007 | 34 | c34a1 / c34a2 | c33b1 / c33b2 |
| 2008 | 35 | c35a1 / c35a2 | c34b1 / c34b2 |
| 2009 | 36 | c36a1 / c36a2 | c35b1 / c35b2 |
| 2010 | c36a3 / c36a4 / c36a4r1 / c36a5 / c36a6 | c35b3 / c35b4 / c35b5 / c35b6 | |
| 2011 | 37 | c37a1 / c37a2 | c36b1 / c36b2 |
| 2012 | 38 | c38a1 / c38a2 | c37b1 / c37b2 |
| 2013 | 39 | c39a1 / c39a2 | c38b1 / c38b2 |
| 2014 | 40 | c40a1 / c40a2 | c39b1 / c39b2 |
| 2015 | 41 | c41a1 / c41a2 | c40b1 / c40b2 |
| 2016 | 42 | c42a1 / c42a2 | c41b1 / c41b2 |
| 2017 | 43 | c43a1 / c43a2 | c42b1 / c42b2 |
| 2018 | 44 | c44a1 / c44a2 | c43b1 / c43b2 |
| 2019 | 45 | c45a1 / c45a2 | c44b1 / c44b2 |
| 2020 | 46 | c46a1 / c46a2 | c45b1 / c45b2 |
| 2021 | 47 | c47a1 / c47a2 | c46b1 / c46b2 |
| 2022 | 48 | c48a1 / c48a2 | c47b1 / c47b2 |
| 2023 | 49 | c49a1 / c49a2 | c48b1 / c48b2 |
| 2024 | 50 | c50a1 | c49b1 |