| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $40,988 | $24,223 |
| 2016 | $43,052 | $28,680 |
| 2017 | $44,890 | $30,404 |
| 2018 | $44,890 | $30,947 |
| 2019 | $47,935 | $28,457 |
| 2020 | $48,454 | $28,976 |
| 2021* | $50,523 | $29,503 |
| 2022* | $52,680 | $30,040 |
| 2023* | $54,930 | $30,587 |
| 2024* | $57,275 | $31,144 |
| 2025* | $59,721 | $31,711 |