| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,233 | $13,721 |
| 2016 | $22,933 | $13,703 |
| 2017 | $23,693 | $13,822 |
| 2018 | $23,693 | $14,484 |
| 2019 | $25,930 | $17,722 |
| 2020 | $29,178 | $20,970 |
| 2021* | $30,144 | $21,974 |
| 2022* | $31,142 | $23,027 |
| 2023* | $32,172 | $24,130 |
| 2024* | $33,237 | $25,286 |
| 2025* | $34,337 | $26,497 |