| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $40,934 | $18,372 |
| 2016 | $42,828 | $20,433 |
| 2017 | $44,512 | $21,898 |
| 2018 | $44,512 | $21,751 |
| 2019 | $47,566 | $21,236 |
| 2020 | $48,862 | $22,532 |
| 2021* | $50,782 | $23,906 |
| 2022* | $52,778 | $25,365 |
| 2023* | $54,852 | $26,912 |
| 2024* | $57,008 | $28,554 |
| 2025* | $59,248 | $30,295 |