| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $23,655 | $15,300 |
| 2016 | $24,649 | $15,809 |
| 2017 | $25,471 | $15,748 |
| 2018 | $25,471 | $15,503 |
| 2019 | $27,221 | $17,193 |
| 2020 | $27,743 | $17,715 |
| 2021* | $28,667 | $18,254 |
| 2022* | $29,621 | $18,808 |
| 2023* | $30,608 | $19,380 |
| 2024* | $31,627 | $19,969 |
| 2025* | $32,680 | $20,576 |
