| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,770 | $17,454 |
| 2016 | $29,230 | $17,426 |
| 2017 | $30,910 | $18,804 |
| 2018 | $30,910 | $18,983 |
| 2019 | $32,712 | $20,454 |
| 2020 | $33,400 | $21,142 |
| 2021* | $34,101 | $21,852 |
| 2022* | $34,818 | $22,587 |
| 2023* | $35,549 | $23,346 |
| 2024* | $36,295 | $24,130 |
| 2025* | $37,057 | $24,941 |
