| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $52,618 | $31,862 |
| 2016 | $54,714 | $30,329 |
| 2017 | $56,880 | $32,831 |
| 2018 | $56,880 | $30,706 |
| 2019 | $60,664 | $32,329 |
| 2020 | $62,596 | $34,261 |
| 2021* | $65,075 | $36,073 |
| 2022* | $67,652 | $37,982 |
| 2023* | $70,331 | $39,991 |
| 2024* | $73,116 | $42,106 |
| 2025* | $76,011 | $44,334 |