| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $35,978 | $23,817 |
| 2016 | $37,348 | $25,246 |
| 2017 | $38,354 | $25,453 |
| 2018 | $38,354 | $25,253 |
| 2019 | $40,110 | $25,203 |
| 2020 | $40,801 | $25,894 |
| 2021* | $41,899 | $26,106 |
| 2022* | $43,026 | $26,320 |
| 2023* | $44,183 | $26,536 |
| 2024* | $45,372 | $26,754 |
| 2025* | $46,592 | $26,973 |