| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,456 | $22,078 |
| 2016 | $29,020 | $18,720 |
| 2017 | $29,792 | N/A |
| 2018 | $29,792 | $26,827 |
| 2019 | $32,504 | $28,997 |
| 2020 | $32,544 | $29,037 |
| 2021* | $33,188 | $29,078 |
| 2022* | $33,846 | $29,118 |
| 2023* | $34,516 | $29,159 |
| 2024* | $35,199 | $29,200 |
| 2025* | $35,896 | $29,241 |
