| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $29,950 | $21,236 |
| 2016 | N/A | N/A |
| 2017 | $25,330 | $18,431 |
| 2018 | $25,330 | $18,822 |
| 2019 | $28,100 | $16,215 |
| 2020 | $28,300 | $16,415 |
| 2021* | $28,501 | $16,617 |
| 2022* | $28,703 | $16,821 |
| 2023* | $28,907 | $17,028 |
| 2024* | $29,112 | $17,238 |
| 2025* | $29,319 | $17,450 |