| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $33,982 | $20,929 |
| 2016 | $35,054 | $21,295 |
| 2017 | $36,200 | $21,578 |
| 2018 | $36,200 | $22,224 |
| 2019 | $38,104 | $23,600 |
| 2020 | $33,520 | $19,016 |
| 2021* | $34,576 | $19,349 |
| 2022* | $35,665 | $19,687 |
| 2023* | $36,788 | $20,032 |
| 2024* | $37,947 | $20,382 |
| 2025* | $39,143 | $20,739 |