| 2016 | 16.5 | 5.9 | 22.9 (126 reporting, sample year) |
|---|
| 2017 | Withheld (Agency reported 6 of 12 months) | Benchmark unavailable | 21.6 (129 reporting, sample year) |
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| 2018 | Withheld (Agency reported 8 of 12 months) | Benchmark unavailable | 20.2 (126 reporting, sample year) |
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| 2019 | 11.0 | 5.2 | 18.3 (130 reporting, sample year) |
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| 2020 | 12.5 | 6.2 | 19.5 (140 reporting, sample year) |
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| 2021 | Withheld (Agency reported 8 of 12 months) | Benchmark unavailable | 20.9 (133 reporting, sample year) |
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| 2022 | Withheld (Agency reported 6 of 12 months) | Benchmark unavailable | 20.6 (121 reporting, sample year) |
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| 2023 | 11.0 | 12.3 | 19.6 (122 reporting, sample year) |
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| 2024 | 9.6 | 8.6 | 15.9 (135 reporting, sample year) |
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| 2025 | 6.1 | 8.5 | 13.6 (139 reporting, sample year) |
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