| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,596 | N/A |
| 2016 | $24,170 | $16,064 |
| 2017 | $23,918 | $15,923 |
| 2018 | $23,918 | $13,855 |
| 2019 | $26,986 | $16,002 |
| 2020 | $28,655 | $17,671 |
| 2021* | $30,426 | $18,516 |
| 2022* | $32,306 | $19,401 |
| 2023* | $34,303 | $20,328 |
| 2024* | $36,423 | $21,300 |
| 2025* | $38,674 | $22,318 |
