| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,128 | $16,191 |
| 2016 | $22,342 | $16,229 |
| 2017 | $23,160 | $16,674 |
| 2018 | $23,160 | $16,851 |
| 2019 | $26,938 | $20,461 |
| 2020 | $26,721 | $20,244 |
| 2021* | $26,980 | $20,459 |
| 2022* | $27,242 | $20,675 |
| 2023* | $27,506 | $20,895 |
| 2024* | $27,773 | $21,116 |
| 2025* | $28,042 | $21,340 |
