| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Aug 2021 | 27 Aug 2021 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2021 | 30 Jun 2021 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Apr 2021 | 31 Mar 2021 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 Mar 2021 | 22 Mar 2021 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Mar 2021 | 16 Mar 2021 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2021 | 16 Mar 2021 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2021 | 15 Mar 2021 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2021 | 15 Mar 2021 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Dec 2020 | 03 Dec 2020 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Nov 2020 | 24 Nov 2020 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Nov 2020 | 16 Nov 2020 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Oct 2020 | 30 Sep 2020 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Aug 2020 | 06 Aug 2020 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2020 | 30 Jun 2020 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Apr 2020 | 31 Mar 2020 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Mar 2020 | 16 Mar 2020 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Mar 2020 | 16 Mar 2020 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2020 | 16 Mar 2020 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Mar 2020 | 28 Oct 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Dec 2019 | 23 Dec 2019 | 000-28274 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Dec 2019 | 23 Dec 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Dec 2019 | 23 Dec 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Dec 2019 | 23 Dec 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Oct 2019 | 30 Sep 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2019 | 30 Jun 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 10 Apr 2019 | 31 Mar 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Mar 2019 | 15 Mar 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Mar 2019 | 15 Mar 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Mar 2019 | 15 Mar 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2019 | 15 Mar 2019 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Oct 2018 | 31 May 2018 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jul 2018 | 29 Jun 2018 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2018 | 31 Mar 2018 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2018 | 29 Mar 2018 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Mar 2018 | 26 Mar 2018 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Mar 2018 | 16 Mar 2018 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Mar 2018 | 15 Mar 2018 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Mar 2018 | 15 Mar 2018 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Mar 2018 | 15 Mar 2018 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Oct 2017 | 29 Sep 2017 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jul 2017 | 30 Jun 2017 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 22 May 2017 | 17 May 2017 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 May 2017 | 10 May 2017 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Apr 2017 | 24 Apr 2017 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Apr 2017 | 23 Mar 2017 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2017 | 31 Mar 2017 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2017 | 30 Mar 2017 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Mar 2017 | 20 Mar 2017 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Mar 2017 | 15 Mar 2017 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Dec 2016 | 29 Nov 2016 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Oct 2016 | 30 Sep 2016 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2016 | 01 Jul 2016 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 May 2016 | 14 Apr 2016 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 May 2016 | 05 May 2016 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Apr 2016 | 04 Apr 2016 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Apr 2016 | 31 Mar 2016 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Mar 2016 | 22 Mar 2016 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 24 Mar 2016 | 22 Mar 2016 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2016 | 15 Mar 2016 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Dec 2015 | 02 Dec 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Nov 2015 | 09 Nov 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Nov 2015 | 09 Nov 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 Nov 2015 | 09 Nov 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Oct 2015 | 30 Sep 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2015 | 30 Jun 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 12 May 2015 | 11 May 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Apr 2015 | 10 Apr 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Apr 2015 | 31 Mar 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Mar 2015 | 24 Mar 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Mar 2015 | 23 Mar 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Mar 2015 | 18 Mar 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Mar 2015 | 15 Mar 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Mar 2015 | 15 Mar 2015 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Oct 2014 | 30 Sep 2014 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Jul 2014 | 30 Jun 2014 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Apr 2014 | 31 Mar 2014 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Mar 2014 | 21 Mar 2014 | 000-28274 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Mar 2014 | 15 Mar 2014 | 000-28274 |