| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,327 | $41,532 |
| 2016 | $41,189 | N/A |
| 2017 | $41,503 | $36,295 |
| 2018 | $41,503 | $31,183 |
| 2019 | $35,601 | $22,374 |
| 2020 | $35,477 | $22,250 |
| 2021* | $35,353 | $19,117 |
| 2022* | $35,229 | $16,425 |
| 2023* | $35,106 | $14,113 |
| 2024* | $34,983 | $12,126 |
| 2025* | $34,860 | $10,418 |