| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | N/A | N/A |
| 2016 | $17,918 | $8,960 |
| 2017 | $18,095 | $12,231 |
| 2018 | $18,095 | $12,677 |
| 2019 | $19,295 | $14,219 |
| 2020 | $23,942 | $18,866 |
| 2021* | $24,854 | $23,096 |
| 2022* | $25,801 | $28,274 |
| 2023* | $26,784 | $34,613 |
| 2024* | $27,805 | $42,373 |
| 2025* | $28,864 | $51,873 |