| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,126 | $20,554 |
| 2016 | $23,535 | $18,744 |
| 2017 | $23,477 | $17,898 |
| 2018 | $23,477 | $18,056 |
| 2019 | $28,077 | $22,219 |
| 2020 | $28,420 | $22,562 |
| 2021* | $28,420 | $22,761 |
| 2022* | $28,420 | $22,961 |
| 2023* | $28,420 | $23,163 |
| 2024* | $28,420 | $23,367 |
| 2025* | $28,420 | $23,572 |
