| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,734 | $27,335 |
| 2016 | $49,118 | $27,620 |
| 2017 | $50,104 | $30,192 |
| 2018 | $50,104 | $27,487 |
| 2019 | $50,218 | $22,063 |
| 2020 | $50,464 | $22,309 |
| 2021* | $50,711 | $22,541 |
| 2022* | $50,960 | $22,775 |
| 2023* | $51,209 | $23,012 |
| 2024* | $51,460 | $23,252 |
| 2025* | $51,713 | $23,493 |