| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,102 | $10,224 |
| 2016 | $18,336 | $10,807 |
| 2017 | $19,046 | $10,826 |
| 2018 | $19,046 | $11,030 |
| 2019 | $19,846 | $10,771 |
| 2020 | $21,831 | $12,756 |
| 2021* | $22,676 | $12,996 |
| 2022* | $23,553 | $13,240 |
| 2023* | $24,465 | $13,489 |
| 2024* | $25,412 | $13,743 |
| 2025* | $26,395 | $14,001 |
