| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,351 | $15,402 |
| 2016 | $23,749 | $16,544 |
| 2017 | $25,307 | $17,406 |
| 2018 | $25,307 | $17,776 |
| 2019 | $27,566 | $19,270 |
| 2020 | $29,787 | $21,491 |
| 2021* | $31,741 | $23,083 |
| 2022* | $33,823 | $24,794 |
| 2023* | $36,042 | $26,631 |
| 2024* | $38,406 | $28,605 |
| 2025* | $40,926 | $30,724 |
