| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $33,490 | $22,183 |
| 2016 | $33,958 | $22,427 |
| 2017 | $34,490 | $22,179 |
| 2018 | $34,490 | $21,517 |
| 2019 | $36,600 | $23,630 |
| 2020 | $37,900 | $24,930 |
| 2021* | $38,495 | $25,204 |
| 2022* | $39,099 | $25,481 |
| 2023* | $39,713 | $25,762 |
| 2024* | $40,337 | $26,045 |
| 2025* | $40,970 | $26,332 |
