| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $32,392 | $15,440 |
| 2016 | $33,396 | $20,998 |
| 2017 | $34,901 | $21,789 |
| 2018 | $34,901 | $21,449 |
| 2019 | $38,009 | $18,103 |
| 2020 | $39,933 | $20,027 |
| 2021* | $41,734 | $20,782 |
| 2022* | $43,616 | $21,566 |
| 2023* | $45,583 | $22,379 |
| 2024* | $47,639 | $23,222 |
| 2025* | $49,788 | $24,098 |