| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,643 | $18,119 |
| 2016 | $27,639 | $18,917 |
| 2017 | $28,875 | $19,306 |
| 2018 | $28,875 | $18,466 |
| 2019 | $30,500 | $19,355 |
| 2020 | $31,662 | $20,517 |
| 2021* | $32,868 | $21,420 |
| 2022* | $34,121 | $22,362 |
| 2023* | $35,421 | $23,346 |
| 2024* | $36,770 | $24,373 |
| 2025* | $38,171 | $25,446 |