| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,226 | $22,155 |
| 2016 | $37,231 | $22,390 |
| 2017 | $38,727 | $22,632 |
| 2018 | $38,727 | $20,440 |
| 2019 | $42,587 | $26,224 |
| 2020 | $44,192 | $27,829 |
| 2021* | $45,858 | $28,130 |
| 2022* | $47,587 | $28,433 |
| 2023* | $49,381 | $28,740 |
| 2024* | $51,243 | $29,051 |
| 2025* | $53,174 | $29,365 |