| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $52,759 | $27,194 |
| 2016 | $54,515 | $26,470 |
| 2017 | $56,554 | $27,219 |
| 2018 | $56,554 | $27,223 |
| 2019 | $60,136 | $25,338 |
| 2020 | $62,044 | $27,246 |
| 2021* | $64,110 | $27,249 |
| 2022* | $66,245 | $27,251 |
| 2023* | $68,451 | $27,254 |
| 2024* | $70,730 | $27,257 |
| 2025* | $73,086 | $27,260 |