| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,058 | $13,657 |
| 2016 | $22,058 | $13,655 |
| 2017 | $23,420 | $13,824 |
| 2018 | $23,420 | $13,703 |
| 2019 | $24,692 | $14,747 |
| 2020 | $25,876 | $15,931 |
| 2021* | $27,118 | $16,129 |
| 2022* | $28,420 | $16,329 |
| 2023* | $29,784 | $16,531 |
| 2024* | $31,213 | $16,736 |
| 2025* | $32,712 | $16,944 |
