| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,882 | $22,222 |
| 2016 | $37,028 | $21,109 |
| 2017 | $37,403 | $22,952 |
| 2018 | $37,403 | $21,457 |
| 2019 | $40,132 | $25,870 |
| 2020 | $40,978 | $26,716 |
| 2021* | $41,392 | $27,590 |
| 2022* | $41,810 | $28,492 |
| 2023* | $42,232 | $29,423 |
| 2024* | $42,659 | $30,386 |
| 2025* | $43,090 | $31,379 |