| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $16,800 | $10,143 |
| 2016 | $17,797 | $8,552 |
| 2017 | $18,720 | $9,445 |
| 2018 | $18,720 | $14,132 |
| 2019 | $19,556 | $12,024 |
| 2020 | $20,578 | $13,046 |
| 2021* | $21,646 | $14,155 |
| 2022* | $22,769 | $15,358 |
| 2023* | $23,951 | $16,664 |
| 2024* | $25,194 | $18,080 |
| 2025* | $26,502 | $19,617 |