| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $27,140 | $17,032 |
| 2016 | $27,659 | $17,312 |
| 2017 | $27,659 | $18,171 |
| 2018 | $27,659 | $17,117 |
| 2019 | $28,390 | $17,729 |
| 2020 | $28,390 | $17,729 |
| 2021* | $28,390 | $18,020 |
| 2022* | $28,390 | $18,315 |
| 2023* | $28,390 | $18,616 |
| 2024* | $28,390 | $18,921 |
| 2025* | $28,390 | $19,231 |