| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 May 2025 | 22 May 2025 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Jun 2024 | 21 Jun 2024 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2024 | 14 Mar 2024 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2024 | 14 Mar 2024 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Dec 2023 | 12 Dec 2023 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2023 | 22 May 2023 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Mar 2023 | 15 Mar 2023 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Dec 2022 | 09 Dec 2022 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Aug 2022 | 26 Aug 2022 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2022 | 11 May 2022 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Mar 2022 | 04 Mar 2022 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Feb 2022 | 24 Feb 2022 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Sep 2021 | 31 Aug 2021 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jun 2021 | 01 Jun 2021 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Nov 2020 | 25 Nov 2020 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Feb 2020 | 25 Feb 2020 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Nov 2019 | 31 Oct 2019 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 11 Mar 2019 | 07 Mar 2019 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Mar 2019 | 27 Feb 2019 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Sep 2018 | 30 Aug 2018 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Nov 2017 | 13 Nov 2017 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2017 | 11 May 2017 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Dec 2016 | 02 Dec 2016 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2016 | 11 May 2016 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Dec 2015 | 22 Dec 2015 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 May 2015 | 27 May 2015 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Nov 2014 | 14 Nov 2014 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2014 | 08 May 2014 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Nov 2013 | 21 Nov 2013 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 May 2013 | 14 May 2013 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Nov 2012 | 19 Nov 2012 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 21 Mar 2012 | 20 Mar 2012 | 000-16540 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Mar 2012 | 16 Mar 2012 | 000-16540 |