| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,572 | $27,572 |
| 2016 | $46,700 | $28,479 |
| 2017 | $49,900 | $30,069 |
| 2018 | $49,900 | $28,711 |
| 2019 | $53,600 | $27,756 |
| 2020 | $55,100 | $29,256 |
| 2021* | $57,728 | $30,219 |
| 2022* | $60,482 | $31,213 |
| 2023* | $63,367 | $32,240 |
| 2024* | $66,389 | $33,300 |
| 2025* | $69,556 | $34,396 |