| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,319 | $17,302 |
| 2016 | $28,370 | $16,228 |
| 2017 | N/A | N/A |
| 2018 | N/A | N/A |
| 2019 | $29,776 | $15,082 |
| 2020 | $31,170 | $16,476 |
| 2021* | $31,927 | $16,726 |
| 2022* | $32,703 | $16,981 |
| 2023* | $33,498 | $17,239 |
| 2024* | $34,312 | $17,501 |
| 2025* | $35,146 | $17,767 |