| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,506 | $17,230 |
| 2016 | $24,302 | $17,617 |
| 2017 | $24,916 | $18,390 |
| 2018 | $24,916 | $18,287 |
| 2019 | $26,144 | $18,734 |
| 2020 | $26,176 | $18,766 |
| 2021* | $26,838 | $19,188 |
| 2022* | $27,517 | $19,620 |
| 2023* | $28,213 | $20,061 |
| 2024* | $28,927 | $20,513 |
| 2025* | $29,659 | $20,974 |
