| Form type | Document | Filing | Description | Filing date | Reporting date | File number(s) |
|---|---|---|---|---|---|---|
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 25, 2023 | May 23, 2023 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 25, 2023 | May 23, 2023 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 25, 2022 | May 24, 2022 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 26, 2021 | May 25, 2021 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 21, 2020 | May 19, 2020 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 8, 2019 | May 7, 2019 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 9, 2018 | May 8, 2018 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 11, 2017 | May 9, 2017 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2016 | May 11, 2016 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 13, 2015 | May 12, 2015 | 001-16189 |
| 4 | Open Document | Open Filing | PRIMARY DOCUMENT | May 14, 2014 | May 13, 2014 | 001-16189 |