| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,104 | $18,023 |
| 2016 | $38,420 | $23,057 |
| 2017 | $38,616 | $22,620 |
| 2018 | $38,616 | $22,675 |
| 2019 | $39,854 | $25,094 |
| 2020 | $40,611 | $25,851 |
| 2021* | $40,948 | $26,632 |
| 2022* | $41,288 | $27,436 |
| 2023* | $41,631 | $28,265 |
| 2024* | $41,976 | $29,118 |
| 2025* | $42,325 | $29,998 |