| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $53,475 | $29,118 |
| 2016 | $55,206 | $29,687 |
| 2017 | $56,880 | $30,359 |
| 2018 | $56,880 | $28,670 |
| 2019 | $60,388 | $29,597 |
| 2020 | $62,290 | $31,499 |
| 2021* | $64,252 | $32,211 |
| 2022* | $66,276 | $32,939 |
| 2023* | $68,364 | $33,683 |
| 2024* | $70,517 | $34,445 |
| 2025* | $72,739 | $35,223 |