| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $15,531 | $7,915 |
| 2016 | $15,981 | $7,943 |
| 2017 | $16,636 | $7,481 |
| 2018 | $16,636 | $6,786 |
| 2019 | $17,521 | $6,929 |
| 2020 | $17,556 | $6,964 |
| 2021* | $18,065 | $6,988 |
| 2022* | $18,589 | $7,013 |
| 2023* | $19,128 | $7,037 |
| 2024* | $19,683 | $7,062 |
| 2025* | $20,254 | $7,087 |
