| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $21,306 | $14,492 |
| 2016 | $22,428 | $15,330 |
| 2017 | $23,546 | $16,026 |
| 2018 | $23,546 | $16,569 |
| 2019 | $25,075 | $16,576 |
| 2020 | $26,558 | $18,059 |
| 2021* | $27,958 | $18,879 |
| 2022* | $29,431 | $19,736 |
| 2023* | $30,982 | $20,632 |
| 2024* | $32,615 | $21,569 |
| 2025* | $34,334 | $22,548 |
