| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $41,112 | $23,174 |
| 2016 | $42,412 | $22,898 |
| 2017 | $43,636 | $24,454 |
| 2018 | $43,636 | $22,459 |
| 2019 | $45,476 | $21,310 |
| 2020 | $46,462 | $22,296 |
| 2021* | $47,805 | $22,031 |
| 2022* | $49,186 | $21,769 |
| 2023* | $50,608 | $21,509 |
| 2024* | $52,070 | $21,254 |
| 2025* | $53,575 | $21,001 |