| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $17,260 | $10,929 |
| 2016 | $18,200 | $11,726 |
| 2017 | $19,967 | $13,323 |
| 2018 | $19,967 | $14,420 |
| 2019 | $20,879 | $14,681 |
| 2020 | $21,818 | $15,620 |
| 2021* | $22,815 | $16,759 |
| 2022* | $23,858 | $17,980 |
| 2023* | $24,948 | $19,291 |
| 2024* | $26,088 | $20,698 |
| 2025* | $27,280 | $22,206 |
