| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,852 | $16,322 |
| 2016 | $24,722 | $17,482 |
| 2017 | $25,929 | $17,802 |
| 2018 | $25,929 | $17,708 |
| 2019 | $26,935 | $17,774 |
| 2020 | $25,466 | $16,305 |
| 2021* | $26,396 | $16,365 |
| 2022* | $27,359 | $16,426 |
| 2023* | $28,358 | $16,487 |
| 2024* | $29,393 | $16,548 |
| 2025* | $30,465 | $16,609 |
