| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,064 | $17,649 |
| 2016 | $28,405 | $17,870 |
| 2017 | $29,485 | $18,805 |
| 2018 | $29,485 | $18,651 |
| 2019 | $30,846 | $19,610 |
| 2020 | $32,052 | $20,816 |
| 2021* | $33,270 | $21,886 |
| 2022* | $34,534 | $23,011 |
| 2023* | $35,847 | $24,194 |
| 2024* | $37,209 | $25,437 |
| 2025* | $38,623 | $26,745 |
