| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $31,113 | $24,420 |
| 2016 | $32,265 | $22,609 |
| 2017 | $33,390 | $22,262 |
| 2018 | $33,390 | $25,607 |
| 2019 | $36,909 | $23,130 |
| 2020 | $36,882 | $23,103 |
| 2021* | $38,169 | $22,750 |
| 2022* | $39,501 | $22,401 |
| 2023* | $40,880 | $22,059 |
| 2024* | $42,307 | $21,721 |
| 2025* | $43,783 | $21,389 |
