| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,732 | $28,514 |
| 2016 | $45,430 | $27,127 |
| 2017 | $46,040 | $27,710 |
| 2018 | $46,040 | $26,405 |
| 2019 | $47,600 | $28,701 |
| 2020 | $48,324 | $29,425 |
| 2021* | $49,059 | $30,058 |
| 2022* | $49,804 | $30,704 |
| 2023* | $50,561 | $31,364 |
| 2024* | $51,330 | $32,038 |
| 2025* | $52,110 | $32,727 |