| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,527 | $14,241 |
| 2016 | $23,089 | $14,939 |
| 2017 | $23,659 | $15,115 |
| 2018 | $23,659 | $15,035 |
| 2019 | $25,241 | $15,824 |
| 2020 | $26,202 | $16,785 |
| 2021* | $26,854 | $17,607 |
| 2022* | $27,523 | $18,470 |
| 2023* | $28,208 | $19,375 |
| 2024* | $28,911 | $20,325 |
| 2025* | $29,631 | $21,321 |
