| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $57,583 | $31,300 |
| 2016 | $59,465 | $32,420 |
| 2017 | $61,209 | $32,551 |
| 2018 | $61,209 | $32,368 |
| 2019 | $65,468 | $32,720 |
| 2020 | $66,192 | $33,444 |
| 2021* | $68,131 | $33,809 |
| 2022* | $70,128 | $34,177 |
| 2023* | $72,182 | $34,550 |
| 2024* | $74,297 | $34,926 |
| 2025* | $76,474 | $35,307 |