| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $17,385 | $15,000 |
| 2016 | $17,814 | $13,251 |
| 2017 | $20,334 | $12,921 |
| 2018 | $20,334 | $14,183 |
| 2019 | $21,210 | $13,362 |
| 2020 | $22,071 | $14,223 |
| 2021* | $22,967 | $13,869 |
| 2022* | $23,900 | $13,524 |
| 2023* | $24,870 | $13,187 |
| 2024* | $25,880 | $12,858 |
| 2025* | $26,930 | $12,538 |