| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,980 | $15,174 |
| 2016 | $24,820 | $14,980 |
| 2017 | $25,750 | $18,319 |
| 2018 | $25,750 | $16,348 |
| 2019 | $29,521 | $17,627 |
| 2020 | $33,524 | $21,630 |
| 2021* | $34,781 | $23,321 |
| 2022* | $36,085 | $25,145 |
| 2023* | $37,439 | $27,112 |
| 2024* | $38,843 | $29,232 |
| 2025* | $40,299 | $31,518 |