| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $22,319 | $15,752 |
| 2016 | $22,582 | $16,681 |
| 2017 | $22,848 | $17,048 |
| 2018 | $22,848 | $15,868 |
| 2019 | $27,890 | $18,976 |
| 2020 | $28,810 | $19,896 |
| 2021* | $29,150 | $20,861 |
| 2022* | $29,494 | $21,873 |
| 2023* | $29,842 | $22,934 |
| 2024* | $30,194 | $24,046 |
| 2025* | $30,550 | $25,212 |
