| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,988 | $18,800 |
| 2016 | $29,218 | $19,664 |
| 2017 | $29,159 | $18,943 |
| 2018 | $29,159 | $19,303 |
| 2019 | $30,143 | $16,399 |
| 2020 | $30,243 | $16,499 |
| 2021* | $30,343 | $16,600 |
| 2022* | $30,443 | $16,701 |
| 2023* | $30,543 | $16,803 |
| 2024* | $30,644 | $16,905 |
| 2025* | $30,745 | $17,008 |
