| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $32,380 | $22,275 |
| 2016 | $33,280 | $21,493 |
| 2017 | $34,924 | $21,463 |
| 2018 | $34,924 | $22,778 |
| 2019 | $37,644 | $22,787 |
| 2020 | $39,360 | $24,503 |
| 2021* | $41,155 | $24,513 |
| 2022* | $43,031 | $24,523 |
| 2023* | $44,994 | $24,532 |
| 2024* | $47,045 | $24,542 |
| 2025* | $49,191 | $24,552 |
