| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,003 | $11,169 |
| 2016 | $22,951 | $11,051 |
| 2017 | $23,948 | $12,273 |
| 2018 | $23,948 | $13,310 |
| 2019 | $25,012 | $13,186 |
| 2020 | $25,386 | $13,560 |
| 2021* | $26,480 | $13,945 |
| 2022* | $27,621 | $14,341 |
| 2023* | $28,812 | $14,748 |
| 2024* | $30,054 | $15,167 |
| 2025* | $31,349 | $15,598 |
