| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $46,504 | $18,063 |
| 2016 | $45,592 | $13,337 |
| 2017 | $47,368 | $15,254 |
| 2018 | $47,368 | $15,122 |
| 2019 | $50,968 | $16,411 |
| 2020 | $51,008 | $16,451 |
| 2021* | $51,049 | $16,490 |
| 2022* | $51,090 | $16,530 |
| 2023* | $51,131 | $16,570 |
| 2024* | $51,171 | $16,609 |
| 2025* | $51,212 | $16,649 |
