| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $21,250 | $12,333 |
| 2016 | $21,500 | $11,355 |
| 2017 | $21,800 | $12,095 |
| 2018 | $21,800 | $12,697 |
| 2019 | $22,350 | $13,853 |
| 2020 | $22,600 | $14,103 |
| 2021* | $22,867 | $14,805 |
| 2022* | $23,137 | $15,543 |
| 2023* | $23,410 | $16,317 |
| 2024* | $23,686 | $17,129 |
| 2025* | $23,965 | $17,982 |
