| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $20,219 | $9,758 |
| 2016 | $21,678 | $13,323 |
| 2017 | $23,363 | $14,740 |
| 2018 | $23,363 | $13,966 |
| 2019 | $24,778 | $15,349 |
| 2020 | $24,181 | $14,752 |
| 2021* | $25,646 | $16,212 |
| 2022* | $27,201 | $17,817 |
| 2023* | $28,849 | $19,581 |
| 2024* | $30,597 | $21,520 |
| 2025* | $32,451 | $23,650 |
