| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $33,391 | $13,857 |
| 2016 | $34,056 | $15,287 |
| 2017 | $33,901 | $14,208 |
| 2018 | $33,901 | $13,890 |
| 2019 | $35,793 | $16,198 |
| 2020 | $36,787 | $17,192 |
| 2021* | $37,519 | $18,248 |
| 2022* | $38,266 | $19,368 |
| 2023* | $39,027 | $20,557 |
| 2024* | $39,804 | $21,819 |
| 2025* | $40,596 | $23,159 |
