| 2016 | 37.9 | 23.4 | 22.9 (126 reporting, sample year) |
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| 2017 | 36.8 | 31.3 | 21.6 (129 reporting, sample year) |
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| 2018 | 33.9 | 23.8 | 20.2 (126 reporting, sample year) |
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| 2019 | 32.3 | 22.4 | 18.3 (130 reporting, sample year) |
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| 2020 | 50.1 | 26.6 | 19.5 (140 reporting, sample year) |
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| 2021 | 32.1 | 24.6 | 20.9 (133 reporting, sample year) |
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| 2022 | 31.3 | 19.7 | 20.6 (121 reporting, sample year) |
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| 2023 | 28.2 | 23.1 | 19.6 (122 reporting, sample year) |
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| 2024 | 34.5 | 22.9 | 15.9 (135 reporting, sample year) |
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| 2025 | Withheld (Agency reported 3 of 12 months) | Benchmark unavailable | 13.6 (139 reporting, sample year) |
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