| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $51,190 | $28,274 |
| 2016 | $53,040 | $29,886 |
| 2017 | $54,840 | $29,496 |
| 2018 | $54,840 | $27,976 |
| 2019 | $58,450 | $28,565 |
| 2020 | $59,898 | $30,013 |
| 2021* | $61,929 | $30,646 |
| 2022* | $64,028 | $31,293 |
| 2023* | $66,198 | $31,953 |
| 2024* | $68,443 | $32,627 |
| 2025* | $70,763 | $33,316 |