| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,259 | $23,515 |
| 2016 | $36,825 | $23,631 |
| 2017 | $38,076 | $23,283 |
| 2018 | $38,076 | $22,378 |
| 2019 | $39,569 | $24,336 |
| 2020 | $40,664 | $25,431 |
| 2021* | $41,790 | $25,556 |
| 2022* | $42,948 | $25,681 |
| 2023* | $44,138 | $25,807 |
| 2024* | $45,360 | $25,933 |
| 2025* | $46,617 | $26,060 |
