| Year | Total Expenses | Average Net Price | 
|---|---|---|
| 2015 | N/A | N/A | 
| 2016 | N/A | N/A | 
| 2017 | $25,773 | $19,753 | 
| 2018 | $25,773 | $19,897 | 
| 2019 | $27,253 | $20,892 | 
| 2020 | $27,253 | $20,892 | 
| 2021* | $27,253 | $21,045 | 
| 2022* | $27,253 | $21,198 | 
| 2023* | $27,253 | $21,353 | 
| 2024* | $27,253 | $21,509 | 
| 2025* | $27,253 | $21,666 |