| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,981 | $19,981 |
| 2016 | $27,286 | $21,256 |
| 2017 | $27,962 | $21,581 |
| 2018 | $27,962 | $21,711 |
| 2019 | $30,154 | $23,780 |
| 2020 | $30,836 | $24,462 |
| 2021* | $31,601 | $25,164 |
| 2022* | $32,384 | $25,886 |
| 2023* | $33,188 | $26,629 |
| 2024* | $34,011 | $27,393 |
| 2025* | $34,854 | $28,180 |
