| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,626 | $10,647 |
| 2016 | $18,702 | $9,292 |
| 2017 | $19,167 | $8,624 |
| 2018 | $19,167 | $9,630 |
| 2019 | $17,078 | $5,366 |
| 2020 | $17,778 | $6,066 |
| 2021* | $17,851 | $5,630 |
| 2022* | $17,924 | $5,225 |
| 2023* | $17,998 | $4,849 |
| 2024* | $18,071 | $4,501 |
| 2025* | $18,145 | $4,177 |