| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,534 | $25,127 |
| 2016 | $49,056 | $25,864 |
| 2017 | $50,686 | $26,357 |
| 2018 | $50,686 | $26,472 |
| 2019 | $54,560 | $28,490 |
| 2020 | $56,350 | $30,280 |
| 2021* | $58,198 | $31,167 |
| 2022* | $60,107 | $32,080 |
| 2023* | $62,079 | $33,020 |
| 2024* | $64,115 | $33,988 |
| 2025* | $66,218 | $34,984 |