| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $45,548 | $28,564 |
| 2016 | $45,988 | $27,558 |
| 2017 | $46,750 | $27,631 |
| 2018 | $46,750 | $27,200 |
| 2019 | $48,265 | $25,114 |
| 2020 | $49,710 | $26,559 |
| 2021* | $50,535 | $26,145 |
| 2022* | $51,374 | $25,737 |
| 2023* | $52,227 | $25,335 |
| 2024* | $53,094 | $24,940 |
| 2025* | $53,975 | $24,551 |