| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $18,119 | $12,092 |
| 2016 | $18,311 | $11,924 |
| 2017 | $18,391 | $13,514 |
| 2018 | $18,391 | $12,929 |
| 2019 | $18,171 | $11,486 |
| 2020 | $18,171 | $11,486 |
| 2021* | $18,171 | $11,326 |
| 2022* | $18,171 | $11,169 |
| 2023* | $18,171 | $11,014 |
| 2024* | $18,171 | $10,861 |
| 2025* | $18,171 | $10,710 |