| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $47,094 | $40,234 |
| 2016 | $45,543 | $32,788 |
| 2017 | $45,828 | $36,042 |
| 2018 | $45,828 | $39,684 |
| 2019 | $53,508 | $43,370 |
| 2020 | $55,686 | $45,548 |
| 2021* | $56,037 | $49,779 |
| 2022* | $56,390 | $54,404 |
| 2023* | $56,745 | $59,458 |
| 2024* | $57,103 | $64,982 |
| 2025* | $57,462 | $71,018 |