| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $35,160 | $30,125 |
| 2016 | $37,620 | $31,308 |
| 2017 | $38,115 | $31,490 |
| 2018 | $38,115 | $30,883 |
| 2019 | $39,501 | $31,891 |
| 2020 | $39,996 | $32,386 |
| 2021* | $40,524 | $32,888 |
| 2022* | $41,059 | $33,398 |
| 2023* | $41,601 | $33,915 |
| 2024* | $42,150 | $34,441 |
| 2025* | $42,706 | $34,975 |