| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,780 | $15,223 |
| 2016 | $27,420 | $17,003 |
| 2017 | $28,770 | $16,935 |
| 2018 | $28,770 | $15,991 |
| 2019 | $29,632 | $16,516 |
| 2020 | $29,802 | $16,686 |
| 2021* | $30,696 | $16,858 |
| 2022* | $31,617 | $17,032 |
| 2023* | $32,565 | $17,207 |
| 2024* | $33,542 | $17,384 |
| 2025* | $34,549 | $17,563 |
