| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $15,150 | $13,157 |
| 2016 | $15,950 | $14,010 |
| 2017 | $17,488 | $12,184 |
| 2018 | $17,488 | $13,372 |
| 2019 | $22,236 | $17,424 |
| 2020 | $22,494 | $17,682 |
| 2021* | $23,682 | $18,828 |
| 2022* | $24,932 | $20,048 |
| 2023* | $26,248 | $21,347 |
| 2024* | $27,634 | $22,730 |
| 2025* | $29,094 | $24,203 |
