| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,924 | $17,619 |
| 2016 | $23,988 | $18,492 |
| 2017 | $25,182 | $19,311 |
| 2018 | $25,182 | $19,246 |
| 2019 | $27,491 | $21,263 |
| 2020 | $28,033 | $21,805 |
| 2021* | $29,334 | $22,771 |
| 2022* | $30,695 | $23,780 |
| 2023* | $32,119 | $24,833 |
| 2024* | $33,609 | $25,933 |
| 2025* | $35,169 | $27,082 |
