| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,263 | $16,433 |
| 2016 | $23,378 | $17,307 |
| 2017 | $24,556 | $18,591 |
| 2018 | $24,556 | $18,182 |
| 2019 | $25,360 | $17,430 |
| 2020 | $26,088 | $18,158 |
| 2021* | $26,941 | $18,917 |
| 2022* | $27,822 | $19,708 |
| 2023* | $28,732 | $20,532 |
| 2024* | $29,671 | $21,390 |
| 2025* | $30,642 | $22,284 |
