| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 May 2021 | 19 May 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Apr 2021 | 01 Apr 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Mar 2021 | 29 Mar 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Mar 2021 | 26 Mar 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Mar 2021 | 08 Mar 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Mar 2021 | 26 Feb 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 26 Feb 2021 | 25 Feb 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Feb 2021 | 12 Feb 2021 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2020 | 15 May 2020 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Apr 2020 | 02 Apr 2020 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Mar 2020 | 27 Mar 2020 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2020 | 18 Feb 2020 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Feb 2020 | 14 Feb 2020 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Nov 2019 | 15 Nov 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Aug 2019 | 28 Aug 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 May 2019 | 15 May 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 May 2019 | 02 May 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 04 Apr 2019 | 02 Apr 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 02 Apr 2019 | 29 Mar 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 25 Feb 2019 | 25 Feb 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Feb 2019 | 14 Feb 2019 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 Nov 2018 | 15 Nov 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Aug 2018 | 15 Aug 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 May 2018 | 15 May 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Apr 2018 | 27 Apr 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Apr 2018 | 03 Apr 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Apr 2018 | 02 Apr 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 28 Mar 2018 | 27 Mar 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 Mar 2018 | 12 Mar 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 09 Mar 2018 | 09 Mar 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Feb 2018 | 14 Feb 2018 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Nov 2017 | 30 Nov 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Nov 2017 | 16 Nov 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Nov 2017 | 14 Nov 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Aug 2017 | 15 Aug 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2017 | 18 May 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Apr 2017 | 01 Apr 2017 | 000-26584 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Mar 2017 | 27 Mar 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 29 Mar 2017 | 27 Mar 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 15 Mar 2017 | 14 Mar 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 23 Feb 2017 | 22 Feb 2017 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 14 Dec 2016 | 14 Dec 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Dec 2016 | 08 Dec 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Nov 2016 | 15 Nov 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Sep 2016 | 01 Sep 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Aug 2016 | 16 Aug 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 07 Jun 2016 | 03 Jun 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Apr 2016 | 01 Apr 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 30 Mar 2016 | 28 Mar 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 16 Mar 2016 | 14 Mar 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 08 Mar 2016 | 08 Mar 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Feb 2016 | 16 Feb 2016 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Nov 2015 | 19 Nov 2015 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 06 Jul 2015 | 02 Jul 2015 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jun 2015 | 03 Jun 2015 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 19 May 2015 | 18 May 2015 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 31 Mar 2015 | 27 Mar 2015 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Feb 2015 | 17 Feb 2015 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Feb 2015 | 05 Feb 2015 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 17 Nov 2014 | 14 Nov 2014 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 18 Aug 2014 | 15 Aug 2014 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 03 Jul 2014 | 02 Jul 2014 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 05 Jun 2014 | 03 Jun 2014 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 13 May 2014 | 12 May 2014 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 01 Apr 2014 | 28 Mar 2014 | 000-26584 |
| 4/A | Open Document | Open Filing | PRIMARY DOCUMENT | 27 Feb 2014 | 19 Feb 2014 | 000-26584 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | 20 Feb 2014 | 19 Feb 2014 | 000-26584 |