| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $15,855 | $8,429 |
| 2016 | $16,609 | $8,779 |
| 2017 | $18,409 | $8,654 |
| 2018 | $18,409 | $10,812 |
| 2019 | $19,402 | $11,856 |
| 2020 | $19,935 | $12,389 |
| 2021* | $20,884 | $12,947 |
| 2022* | $21,878 | $13,529 |
| 2023* | $22,919 | $14,138 |
| 2024* | $24,010 | $14,774 |
| 2025* | $25,153 | $15,439 |
