| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,210 | $18,014 |
| 2016 | $30,337 | $21,198 |
| 2017 | $31,058 | $21,471 |
| 2018 | $31,058 | $21,701 |
| 2019 | $35,638 | $25,686 |
| 2020 | $34,911 | $24,959 |
| 2021* | $35,742 | $25,281 |
| 2022* | $36,593 | $25,607 |
| 2023* | $37,463 | $25,937 |
| 2024* | $38,355 | $26,272 |
| 2025* | $39,268 | $26,611 |
