| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $59,138 | $39,084 |
| 2016 | $59,574 | $40,235 |
| 2017 | $60,854 | $38,447 |
| 2018 | $60,854 | $36,962 |
| 2019 | $63,630 | $37,496 |
| 2020 | $65,606 | $39,472 |
| 2021* | $67,017 | $40,040 |
| 2022* | $68,457 | $40,617 |
| 2023* | $69,929 | $41,202 |
| 2024* | $71,433 | $41,795 |
| 2025* | $72,968 | $42,397 |