| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | N/A | N/A |
| 2016 | $16,112 | $11,861 |
| 2017 | $16,280 | $12,089 |
| 2018 | $16,280 | $11,101 |
| 2019 | $17,156 | $11,663 |
| 2020 | $17,360 | $11,867 |
| 2021* | $17,554 | $12,085 |
| 2022* | $17,751 | $12,308 |
| 2023* | $17,950 | $12,534 |
| 2024* | $18,151 | $12,765 |
| 2025* | $18,354 | $13,000 |
