| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,260 | $15,504 |
| 2016 | $25,285 | $17,159 |
| 2017 | $23,600 | $13,076 |
| 2018 | $23,600 | $13,943 |
| 2019 | $24,050 | $15,524 |
| 2020 | $23,420 | $14,894 |
| 2021* | $23,420 | $15,881 |
| 2022* | $23,420 | $16,934 |
| 2023* | $23,420 | $18,057 |
| 2024* | $23,420 | $19,254 |
| 2025* | $23,420 | $20,531 |