| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $19,121 | $10,068 |
| 2016 | $19,199 | $8,031 |
| 2017 | $19,630 | $7,426 |
| 2018 | $19,630 | $6,882 |
| 2019 | $20,540 | $2,015 |
| 2020 | $20,980 | $2,455 |
| 2021* | $21,429 | $2,270 |
| 2022* | $21,888 | $2,099 |
| 2023* | $22,356 | $1,941 |
| 2024* | $22,834 | $1,795 |
| 2025* | $23,323 | $1,660 |