| 2016 | 17.5 | 6.4 | 22.9 (126 reporting, sample year) |
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| 2017 | Withheld (Agency reported 5 of 12 months) | Benchmark unavailable | 21.6 (129 reporting, sample year) |
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| 2018 | Withheld (Agency reported 1 of 12 months) | Benchmark unavailable | 20.2 (126 reporting, sample year) |
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| 2019 | — | — | — |
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| 2020 | Withheld (Agency reported 2 of 12 months) | Benchmark unavailable | 19.5 (140 reporting, sample year) |
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| 2021 | 6.9 | 15.1 | 20.9 (133 reporting, sample year) |
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| 2022 | Withheld (Agency reported 8 of 12 months) | Benchmark unavailable | 20.6 (121 reporting, sample year) |
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| 2023 | 6.6 | 9.1 | 19.6 (122 reporting, sample year) |
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| 2024 | 8.0 | 8.4 | 15.9 (135 reporting, sample year) |
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| 2025 | 4.1 | 8.0 | 13.6 (139 reporting, sample year) |
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