| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $43,663 | $35,333 |
| 2016 | $44,643 | $33,517 |
| 2017 | $46,261 | $30,612 |
| 2018 | $46,261 | $32,768 |
| 2019 | $47,506 | $28,341 |
| 2020 | $52,038 | $32,873 |
| 2021* | $53,438 | $31,183 |
| 2022* | $54,875 | $29,581 |
| 2023* | $56,351 | $28,060 |
| 2024* | $57,867 | $26,618 |
| 2025* | $59,424 | $25,250 |