| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,310 | $19,070 |
| 2016 | $25,763 | $18,884 |
| 2017 | $26,352 | $19,199 |
| 2018 | $26,352 | $18,827 |
| 2019 | $28,021 | $19,395 |
| 2020 | $28,021 | $19,395 |
| 2021* | $28,523 | $19,395 |
| 2022* | $29,033 | $19,395 |
| 2023* | $29,553 | $19,395 |
| 2024* | $30,082 | $19,395 |
| 2025* | $30,620 | $19,395 |