| Q3 2026 | Sep 30, 2026 | 64.8% | +1.3 pts | CPKC Form 8-K, filed 2026-10-28 ↗ |
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| Q2 2026 | Jun 30, 2026 | 64.6% | +0.9 pts | CPKC Form 8-K, filed 2026-07-29 ↗ |
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| Q1 2026 | Mar 31, 2026 | 66.0% | +0.7 pts | CPKC Form 8-K, filed 2026-04-29 ↗ |
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| Q4 2025 | Dec 31, 2025 | 58.9% | -0.8 pts | CPKC Form 8-K, filed 2026-01-28 ↗ |
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| Q3 2025 | Sep 30, 2025 | 63.5% | -2.6 pts | CPKC Form 8-K, filed 2026-10-28 ↗ |
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| Q2 2025 | Jun 30, 2025 | 63.7% | -1.1 pts | CPKC Form 8-K, filed 2026-07-29 ↗ |
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| Q1 2025 | Mar 31, 2025 | 65.3% | -2.1 pts | CPKC Form 8-K, filed 2026-04-29 ↗ |
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| Q4 2024 | Dec 31, 2024 | 59.7% | -2.1 pts | CPKC Form 8-K, filed 2026-01-28 ↗ |
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| Q3 2024 | Sep 30, 2024 | 66.1% | +1.2 pts | CPKC Form 8-K, filed 2025-10-29 ↗ |
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| Q2 2024 | Jun 30, 2024 | 64.8% | -5.5 pts | CPKC Form 8-K, filed 2025-07-30 ↗ |
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| Q1 2024 | Mar 31, 2024 | 67.4% | +4.0 pts | CPKC Form 8-K, filed 2025-04-30 ↗ |
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| Q4 2023 | Dec 31, 2023 | 61.8% | +2.0 pts | CPKC Form 8-K, filed 2025-01-29 ↗ |
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| Q3 2023 | Sep 30, 2023 | 64.9% | +5.4 pts | CPKC Form 8-K, filed 2024-10-23 ↗ |
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| Q2 2023 | Jun 30, 2023 | 70.3% | +9.7 pts | CPKC Form 8-K, filed 2024-07-30 ↗ |
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| Q1 2023 | Mar 31, 2023 | 63.4% | -7.5 pts | CPKC Form 8-K, filed 2024-04-24 ↗ |
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| Q4 2022 | Dec 31, 2022 | 59.8% | +0.6 pts | CPKC Form 8-K, filed 2024-01-30 ↗ |
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| Q3 2022 | Sep 30, 2022 | 59.5% | -0.7 pts | CPKC Form 8-K, filed 2023-10-25 ↗ |
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| Q2 2022 | Jun 30, 2022 | 60.6% | +0.5 pts | CPKC Form 8-K, filed 2023-07-27 ↗ |
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| Q1 2022 | Mar 31, 2022 | 70.9% | +10.7 pts | CPKC Form 8-K, filed 2023-04-26 ↗ |
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| Q4 2021 | Dec 31, 2021 | 59.2% | +5.3 pts | CPKC Form 8-K, filed 2023-01-31 ↗ |
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| Q3 2021 | Sep 30, 2021 | 60.2% | +2.0 pts | CPKC Form 8-K, filed 2022-10-26 ↗ |
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| Q2 2021 | Jun 30, 2021 | 60.1% | +3.1 pts | CPKC Form 8-K, filed 2022-07-28 ↗ |
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| Q1 2021 | Mar 31, 2021 | 60.2% | +1.0 pts | CPKC Form 8-K, filed 2022-04-27 ↗ |
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| Q4 2020 | Dec 31, 2020 | 53.9% | -3.1 pts | CPKC Form 8-K, filed 2022-01-27 ↗ |
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| Q3 2020 | Sep 30, 2020 | 58.2% | +2.1 pts | CPKC Form 8-K, filed 2021-10-20 ↗ |
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| Q2 2020 | Jun 30, 2020 | 57.0% | -1.4 pts | CPKC Form 8-K, filed 2021-07-28 ↗ |
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| Q1 2020 | Mar 31, 2020 | 59.2% | -10.1 pts | CPKC Form 8-K, filed 2021-04-21 ↗ |
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| Q4 2019 | Dec 31, 2019 | 57.0% | +0.5 pts | CPKC Form 8-K, filed 2021-01-27 ↗ |
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| Q3 2019 | Sep 30, 2019 | 56.1% | -2.2 pts | CPKC Form 8-K, filed 2020-10-20 ↗ |
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| Q2 2019 | Jun 30, 2019 | 58.4% | -5.8 pts | CPKC Form 8-K, filed 2020-07-22 ↗ |
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| Q1 2019 | Mar 31, 2019 | 69.3% | +1.8 pts | CPKC Form 8-K, filed 2020-04-21 ↗ |
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| Q4 2018 | Dec 31, 2018 | 56.5% | -3.7 pts | CPKC Form 8-K, filed 2020-01-29 ↗ |
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| Q3 2018 | Sep 30, 2018 | 58.3% | -2.7 pts | CPKC Form 8-K, filed 2019-10-23 ↗ |
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| Q2 2018 | Jun 30, 2018 | 64.2% | +1.4 pts | CPKC Form 8-K, filed 2019-07-16 ↗ |
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| Q1 2018 | Mar 31, 2018 | 67.5% | +5.1 pts | CPKC Form 8-K, filed 2019-04-23 ↗ |
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| Q4 2017 | Dec 31, 2017 | 60.2% | +4.0 pts | CPKC Form 8-K, filed 2019-01-23 ↗ |
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| Q3 2017 | Sep 30, 2017 | 61.0% | +3.3 pts | CPKC Form 8-K, filed 2018-10-18 ↗ |
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| Q2 2017 | Jun 30, 2017 | 62.8% | +0.8 pts | CPKC Form 8-K, filed 2018-07-18 ↗ |
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| Q1 2017 | Mar 31, 2017 | 62.4% | +3.5 pts | CPKC Form 8-K, filed 2018-04-18 ↗ |
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| Q4 2016 | Dec 31, 2016 | 56.2% | -3.6 pts | CPKC Form 8-K, filed 2018-01-18 ↗ |
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| Q3 2016 | Sep 30, 2016 | 57.7% | +1.8 pts | CPKC Form 8-K, filed 2017-10-17 ↗ |
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| Q2 2016 | Jun 30, 2016 | 62.0% | +1.1 pts | CPKC Form 8-K, filed 2017-07-19 ↗ |
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| Q1 2016 | Mar 31, 2016 | 58.9% | -4.3 pts | CPKC Form 8-K, filed 2017-04-19 ↗ |
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| Q4 2015 | Dec 31, 2015 | 59.8% | 0.0 pts | CPKC Form 8-K, filed 2017-01-18 ↗ |
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| Q3 2015 | Sep 30, 2015 | 55.9% | – | CPKC Form 8-K, filed 2016-10-19 ↗ |
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| Q2 2015 | Jun 30, 2015 | 60.9% | – | CPKC Form 8-K, filed 2016-07-20 ↗ |
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| Q1 2015 | Mar 31, 2015 | 63.2% | – | CPKC Form 8-K, filed 2016-04-20 ↗ |
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| Q4 2014 | Dec 31, 2014 | 59.8% | – | CPKC Form 8-K, filed 2016-01-21 ↗ |
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