| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $57,500 | $32,016 |
| 2016 | $59,800 | $32,338 |
| 2017 | $61,900 | $34,233 |
| 2018 | $61,900 | $31,049 |
| 2019 | $66,150 | $30,402 |
| 2020 | $68,650 | $32,902 |
| 2021* | $71,245 | $33,234 |
| 2022* | $73,938 | $33,570 |
| 2023* | $76,733 | $33,909 |
| 2024* | $79,633 | $34,252 |
| 2025* | $82,644 | $34,597 |