| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $50,460 | $31,170 |
| 2016 | $53,130 | $33,159 |
| 2017 | $54,662 | $33,443 |
| 2018 | $54,662 | $33,136 |
| 2019 | $59,249 | $33,273 |
| 2020 | $61,022 | $35,046 |
| 2021* | $62,847 | $35,347 |
| 2022* | $64,726 | $35,651 |
| 2023* | $66,661 | $35,958 |
| 2024* | $68,654 | $36,267 |
| 2025* | $70,707 | $36,579 |