| 2016 | 3.1 | Benchmark unavailable | 22.9 (126 reporting, sample year) |
|---|
| 2017 | 5.2 | Benchmark unavailable | 21.6 (129 reporting, sample year) |
|---|
| 2018 | 9.3 | 15.1 | 20.2 (126 reporting, sample year) |
|---|
| 2019 | 11.5 | 15.6 | 18.3 (130 reporting, sample year) |
|---|
| 2020 | 14.1 | 21.2 | 19.5 (140 reporting, sample year) |
|---|
| 2021 | Withheld (Agency reported 10 of 12 months) | Benchmark unavailable | 20.9 (133 reporting, sample year) |
|---|
| 2022 | Withheld (Agency reported 8 of 12 months) | Benchmark unavailable | 20.6 (121 reporting, sample year) |
|---|
| 2023 | 19.3 | 20.8 | 19.6 (122 reporting, sample year) |
|---|
| 2024 | 4.8 | Benchmark unavailable | 15.9 (135 reporting, sample year) |
|---|
| 2025 | 6.0 | Benchmark unavailable | 13.6 (139 reporting, sample year) |
|---|