| 1990 | 1991 | 1992 | 1993 | 1994 | 1995 | 1996 | 1997 | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ST PLC 1990 | ST PLC 1991 | ST PLC 1992 | ST PLC 1993 | ST PLC 1994 | ST PLC 1995 | ST PLC 1996 | ST PLC 1997 | ST PLC 1998 | ST PLC 1999 | ST PLC 2000 | St PLC 2001 | St PLC 2002 | St PLC 2003 | ST PLC 2004 | St PLC 2005 | St PLC 2006 |
| 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| St PLC 2007 | St PLC 2008 | St PLC 2009 | ST PLC 2010 | ST PLC 2011 | ST PLC 2012 | ST PLC 2013 | ST PLC 2014 | ST PLC 2015 | St PLC 2016 | ST PLC 2017 | ST PLC 2018 | ST PLC 2019 | St PLC 2020 | ST PLC 2021 | ST PLC 2022 | ST PLC 2023 |