| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $52,550 | $35,997 |
| 2016 | $54,782 | $35,692 |
| 2017 | $57,154 | $35,824 |
| 2018 | $57,154 | $33,549 |
| 2019 | $59,953 | $33,229 |
| 2020 | $60,028 | $33,304 |
| 2021* | $62,579 | $33,021 |
| 2022* | $65,239 | $32,740 |
| 2023* | $68,011 | $32,462 |
| 2024* | $70,902 | $32,186 |
| 2025* | $73,915 | $31,912 |