| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,219 | $15,216 |
| 2016 | $23,460 | $16,727 |
| 2017 | $25,048 | $18,597 |
| 2018 | $25,048 | $17,263 |
| 2019 | $27,486 | $19,842 |
| 2020 | $29,862 | $22,218 |
| 2021* | $31,884 | $24,702 |
| 2022* | $34,042 | $27,464 |
| 2023* | $36,347 | $30,534 |
| 2024* | $38,808 | $33,948 |
| 2025* | $41,435 | $37,743 |
