| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,414 | $18,959 |
| 2016 | $26,076 | $20,455 |
| 2017 | $27,153 | $21,440 |
| 2018 | $27,153 | $21,262 |
| 2019 | $28,927 | $23,060 |
| 2020 | $28,843 | $22,976 |
| 2021* | $29,593 | $24,083 |
| 2022* | $30,362 | $25,244 |
| 2023* | $31,152 | $26,461 |
| 2024* | $31,962 | $27,736 |
| 2025* | $32,793 | $29,073 |
