Proxy Materials
| Year | Document |
|---|---|
| 2021 | CPI 2021 Proxy Statement |
| 2020 | CPI 2020 Supplemental Proxy Solicitation Material |
| 2020 | CPI 2020 Proxy Statement |
| 2019 | CPI 2019 Proxy Statement |
| 2018 | CPI 2018 Proxy Statement |
| 2017 | CPI 2017 Proxy Statement |
| 2016 | CPI 2016 Proxy Statement Amendment 1 |
| 2016 | CPI 2016 Proxy Statement |
| 2015 | CPI 2015 Proxy Statement |
| 2014 | CPI 2014 Proxy Statement |
| 2013 | CPI 2013 Proxy Statement |
| 2012 | CPI 2012 Proxy Statement |
| 2011 | CPI 2011 Proxy Statement Amendment 1 |
| 2011 | CPI 2011 Proxy Statement |