| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,410 | $24,457 |
| 2016 | $39,480 | $24,764 |
| 2017 | $40,210 | $27,219 |
| 2018 | $40,210 | $26,417 |
| 2019 | $42,880 | $29,199 |
| 2020 | $25,395 | $11,714 |
| 2021* | $25,865 | $11,862 |
| 2022* | $26,343 | $12,011 |
| 2023* | $26,831 | $12,162 |
| 2024* | $27,327 | $12,316 |
| 2025* | $27,833 | $12,471 |