| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $39,136 | $23,028 |
| 2016 | $40,450 | $23,132 |
| 2017 | $41,996 | $23,739 |
| 2018 | $41,996 | $23,969 |
| 2019 | $44,462 | $23,843 |
| 2020 | $45,662 | $25,043 |
| 2021* | $47,196 | $25,286 |
| 2022* | $48,782 | $25,531 |
| 2023* | $50,421 | $25,779 |
| 2024* | $52,115 | $26,029 |
| 2025* | $53,866 | $26,281 |
