| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,553 | $22,623 |
| 2016 | $45,367 | $21,927 |
| 2017 | $47,493 | $22,158 |
| 2018 | $47,493 | $23,027 |
| 2019 | $50,372 | $21,705 |
| 2020 | $51,734 | $23,067 |
| 2021* | $53,131 | $23,309 |
| 2022* | $54,565 | $23,554 |
| 2023* | $56,039 | $23,801 |
| 2024* | $57,552 | $24,051 |
| 2025* | $59,106 | $24,304 |