| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,856 | $18,507 |
| 2016 | $30,274 | $24,130 |
| 2017 | $33,844 | $30,491 |
| 2018 | $33,844 | $28,057 |
| 2019 | $34,106 | $30,730 |
| 2020 | $34,106 | $30,730 |
| 2021* | $34,369 | $33,659 |
| 2022* | $34,633 | $36,866 |
| 2023* | $34,900 | $40,380 |
| 2024* | $35,169 | $44,228 |
| 2025* | $35,439 | $48,443 |