| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $17,685 | $11,390 |
| 2016 | $17,989 | $14,314 |
| 2017 | $21,039 | $18,511 |
| 2018 | $21,039 | $16,323 |
| 2019 | $21,884 | $19,625 |
| 2020 | $22,986 | $20,727 |
| 2021* | $23,910 | $24,920 |
| 2022* | $24,871 | $29,961 |
| 2023* | $25,871 | $36,023 |
| 2024* | $26,911 | $43,310 |
| 2025* | $27,993 | $52,072 |