| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,310 | $22,892 |
| 2016 | $39,544 | $23,984 |
| 2017 | $40,566 | $23,284 |
| 2018 | $40,566 | $23,261 |
| 2019 | $43,230 | $23,106 |
| 2020 | $44,620 | $24,496 |
| 2021* | $46,057 | $24,472 |
| 2022* | $47,540 | $24,447 |
| 2023* | $49,071 | $24,423 |
| 2024* | $50,651 | $24,398 |
| 2025* | $52,282 | $24,374 |