| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $13,170 | N/A |
| 2016 | $13,490 | N/A |
| 2017 | $13,790 | N/A |
| 2018 | $13,790 | N/A |
| 2019 | $14,736 | $13,236 |
| 2020 | $15,240 | $13,740 |
| 2021* | $15,610 | $14,263 |
| 2022* | $15,990 | $14,807 |
| 2023* | $16,378 | $15,371 |
| 2024* | $16,776 | $15,957 |
| 2025* | $17,184 | $16,565 |
