| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | FORM 4 | 02 Mar 2022 | 28 Feb 2022 | 000-05131 |
| 4 | Open Document | Open Filing | FORM 4 | 02 Dec 2021 | 30 Nov 2021 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Sep 2021 | 31 Aug 2021 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jun 2021 | 31 May 2021 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Apr 2021 | 21 Apr 2021 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2021 | 28 Feb 2021 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Dec 2020 | 30 Nov 2020 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Sep 2020 | 31 Aug 2020 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Jun 2020 | 31 May 2020 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 May 2020 | 30 Apr 2020 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Mar 2020 | 29 Feb 2020 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Dec 2019 | 02 Dec 2019 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Sep 2019 | 31 Aug 2019 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jun 2019 | 31 May 2019 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Apr 2019 | 16 Apr 2019 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Mar 2019 | 28 Feb 2019 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Dec 2018 | 30 Nov 2018 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Sep 2018 | 31 Aug 2018 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Jun 2018 | 31 May 2018 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Apr 2018 | 25 Apr 2018 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Mar 2018 | 28 Feb 2018 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2017 | 27 Apr 2017 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2016 | 27 Apr 2016 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Apr 2015 | 22 Apr 2015 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 May 2014 | 29 Apr 2014 | 000-05131 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Apr 2013 | 25 Apr 2013 | 000-05131 |
| 3 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Jan 2013 | 01 Jan 2013 | 000-05131 |