| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,487 | $12,600 |
| 2016 | $24,822 | $15,541 |
| 2017 | $25,110 | $15,959 |
| 2018 | $25,110 | $15,708 |
| 2019 | $27,248 | $17,547 |
| 2020 | $27,427 | $17,726 |
| 2021* | $27,745 | $18,203 |
| 2022* | $28,067 | $18,692 |
| 2023* | $28,393 | $19,195 |
| 2024* | $28,722 | $19,712 |
| 2025* | $29,055 | $20,242 |
