| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $37,600 | $21,591 |
| 2016 | $38,785 | $22,774 |
| 2017 | $39,865 | $23,099 |
| 2018 | $39,865 | $21,616 |
| 2019 | $31,140 | $21,532 |
| 2020 | $32,030 | $22,422 |
| 2021* | $32,920 | $22,743 |
| 2022* | $33,836 | $23,068 |
| 2023* | $34,776 | $23,398 |
| 2024* | $35,743 | $23,732 |
| 2025* | $36,737 | $24,072 |
