| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $52,153 | $26,740 |
| 2016 | $54,011 | $29,634 |
| 2017 | $55,954 | $31,730 |
| 2018 | $55,954 | $28,997 |
| 2019 | $60,337 | $30,617 |
| 2020 | $60,517 | $30,797 |
| 2021* | $62,671 | $32,519 |
| 2022* | $64,903 | $34,336 |
| 2023* | $67,213 | $36,256 |
| 2024* | $69,606 | $38,282 |
| 2025* | $72,084 | $40,422 |