| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,096 | $21,842 |
| 2016 | $39,370 | $22,582 |
| 2017 | $40,346 | $22,473 |
| 2018 | $40,346 | $22,886 |
| 2019 | $42,574 | $21,787 |
| 2020 | $43,752 | $22,965 |
| 2021* | $44,964 | $23,388 |
| 2022* | $46,209 | $23,818 |
| 2023* | $47,489 | $24,256 |
| 2024* | $48,805 | $24,702 |
| 2025* | $50,157 | $25,157 |