| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $60,422 | $44,040 |
| 2016 | $62,204 | $43,797 |
| 2017 | $64,485 | $45,012 |
| 2018 | $64,485 | $44,698 |
| 2019 | $70,046 | $50,169 |
| 2020 | $70,858 | $50,981 |
| 2021* | $72,948 | $51,807 |
| 2022* | $75,100 | $52,646 |
| 2023* | $77,316 | $53,499 |
| 2024* | $79,597 | $54,366 |
| 2025* | $81,945 | $55,246 |