| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $49,580 | $20,644 |
| 2016 | $50,886 | $22,080 |
| 2017 | $51,910 | $22,319 |
| 2018 | $51,910 | $20,538 |
| 2019 | $53,610 | $20,708 |
| 2020 | $54,930 | $22,028 |
| 2021* | $56,281 | $22,266 |
| 2022* | $57,666 | $22,506 |
| 2023* | $59,084 | $22,749 |
| 2024* | $60,538 | $22,995 |
| 2025* | $62,027 | $23,243 |