| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $14,816 | $9,450 |
| 2016 | $17,804 | $12,255 |
| 2017 | $17,821 | $12,318 |
| 2018 | $17,821 | $12,355 |
| 2019 | $19,950 | $14,521 |
| 2020 | $21,450 | $16,021 |
| 2021* | $23,063 | $17,676 |
| 2022* | $24,797 | $19,502 |
| 2023* | $26,662 | $21,516 |
| 2024* | $28,667 | $23,739 |
| 2025* | $30,823 | $26,191 |
