| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Apr 2022 | 13 Apr 2022 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Mar 2022 | 30 Mar 2022 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Apr 2021 | 05 Apr 2021 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Mar 2021 | 19 Mar 2021 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2021 | 12 Mar 2021 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jun 2020 | 04 Jun 2020 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Mar 2020 | 04 Mar 2020 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Apr 2019 | 28 Mar 2019 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2018 | 02 Apr 2018 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Mar 2018 | 27 Feb 2018 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Mar 2017 | 07 Mar 2017 | 001-12647 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Feb 2017 | 21 Feb 2017 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Feb 2017 | 16 Feb 2017 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Feb 2016 | 04 Feb 2016 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Feb 2016 | 29 Jan 2016 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Feb 2016 | 19 Jan 2016 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Jan 2016 | 15 Jan 2016 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Mar 2015 | 05 Mar 2015 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2015 | 24 Feb 2015 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2014 | 27 Feb 2014 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Feb 2014 | 12 Feb 2014 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Feb 2013 | 12 Feb 2013 | 001-12647 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Feb 2013 | 22 Jan 2013 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Jan 2013 | 22 Jan 2013 | 001-12647 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Jul 2012 | 09 May 2012 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 May 2012 | 09 May 2012 | 001-12647 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Feb 2012 | 23 Feb 2012 | 001-12647 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Feb 2012 | 04 Apr 2011 | 001-12647 |