| 2026 | 2027 | 18,000 | 0 | 18,000 | 0 | 18,000 | 0 | 18,000 |
| 2025 | 2026 | 20,000 | 0 | 20,000 | 0 | 20,000 | 0 | 20,000 |
| 2024 | 2025 | 19,000 | 0 | 19,000 | 0 | 19,000 | 0 | 19,000 |
| 2023 | 2024 | 18,000 | 0 | 18,000 | 0 | 18,000 | 0 | 18,000 |
| 2022 | 2023 | 21,000 | 0 | 21,000 | 0 | 21,000 | 0 | 21,000 |
| 2021 | 2022 | 32,000 | 0 | 32,000 | 0 | 32,000 | 0 | 32,000 |
| 2020 | 2021 | 27,000 | 0 | 27,000 | 0 | 27,000 | 0 | 27,000 |
| 2019 | 2020 | 27,000 | 0 | 27,000 | 0 | 27,000 | 0 | 27,000 |
| 2018 | 2019 | 25,000 | 0 | 25,000 | 0 | 25,000 | 0 | 25,000 |
| 2017 | 2018 | 23,000 | 0 | 23,000 | 0 | 23,000 | 0 | 23,000 |
| 2016 | 2017 | 21,000 | 0 | 21,000 | 0 | 21,000 | 0 | 21,000 |
| 2015 | 2016 | 25,000 | 0 | 25,000 | 0 | 25,000 | 0 | 25,000 |
| 2014 | 2015 | 24,000 | 0 | 24,000 | 0 | 24,000 | 0 | 24,000 |
| 2013 | 2014 | 20,000 | 0 | 20,000 | 0 | 20,000 | 0 | 20,000 |
| 2012 | 2013 | 20,000 | 0 | 20,000 | 0 | 20,000 | 0 | 20,000 |
| 2011 | 2012 | 20,000 | 0 | 20,000 | 0 | 20,000 | 0 | 20,000 |
| 2010 | 2011 | 20,000 | 0 | 20,000 | 0 | 20,000 | 0 | 20,000 |
| 2009 | 2010 | 20,000 | 0 | 20,000 | 0 | 20,000 | 0 | 20,000 |
| 2008 | 2009 | 24,000 | 0 | 24,000 | 0 | 24,000 | 0 | 24,000 |
| 2007 | 2008 | 24,000 | 0 | 24,000 | 0 | 24,000 | 0 | 24,000 |
| 2006 | 2007 | 24,000 | 0 | 24,000 | 0 | 24,000 | 0 | 24,000 |
| 2005 | 2006 | 24,000 | 0 | 24,000 | 0 | 24,000 | 0 | 24,000 |
| 2004 | 2005 | 24,000 | 0 | 24,000 | 0 | 24,000 | 0 | 24,000 |
| 2003 | 2004 | 24,000 | 0 | 24,000 | 0 | 24,000 | 0 | 24,000 |
| 2002 | 2003 | 23,000 | 0 | 23,000 | 0 | 23,000 | 0 | 23,000 |
| 2001 | 2002 | 22,000 | 0 | 22,000 | 0 | 22,000 | 0 | 22,000 |
| 2000 | 2001 | 21,000 | 0 | 21,000 | 0 | 21,000 | 0 | 21,000 |
| 1999 | 2000 | 21,000 | 0 | 21,000 | 0 | 21,000 | 0 | 21,000 |
| 1998 | 1999 | 20,000 | 0 | 20,000 | 0 | 20,000 | 0 | 20,000 |
| 1997 | 1998 | 0 | 0 | 0 | 0 | 20,000 | 0 | 20,000 |
| 1996 | 1997 | 0 | 0 | 0 | 0 | 20,000 | 0 | 20,000 |
| 1995 | 1996 | 0 | 0 | 0 | 0 | 20,000 | 0 | 20,000 |
| 1994 | 1995 | 0 | 0 | 0 | 0 | 20,000 | 0 | 20,000 |
|