| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $24,183 | $16,683 |
| 2016 | $25,916 | $17,465 |
| 2017 | $26,611 | $17,522 |
| 2018 | $26,611 | $17,295 |
| 2019 | $27,197 | $15,740 |
| 2020 | $27,711 | $16,254 |
| 2021* | $28,321 | $16,308 |
| 2022* | $28,944 | $16,361 |
| 2023* | $29,580 | $16,415 |
| 2024* | $30,231 | $16,470 |
| 2025* | $30,896 | $16,524 |
