| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $35,988 | $23,808 |
| 2016 | $37,884 | $25,167 |
| 2017 | $39,408 | $27,277 |
| 2018 | $39,408 | $27,076 |
| 2019 | $42,330 | $29,896 |
| 2020 | $43,580 | $31,146 |
| 2021* | $45,332 | $32,924 |
| 2022* | $47,154 | $34,804 |
| 2023* | $49,050 | $36,792 |
| 2024* | $51,022 | $38,893 |
| 2025* | $53,073 | $41,113 |
