| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,140 | $16,675 |
| 2016 | $23,956 | $16,281 |
| 2017 | $24,566 | $16,069 |
| 2018 | $24,566 | $14,670 |
| 2019 | $26,662 | $16,894 |
| 2020 | $26,814 | $17,046 |
| 2021* | $27,498 | $16,824 |
| 2022* | $28,199 | $16,606 |
| 2023* | $28,918 | $16,390 |
| 2024* | $29,655 | $16,177 |
| 2025* | $30,412 | $15,966 |
