| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,141 | $19,600 |
| 2016 | $29,036 | $23,666 |
| 2017 | $29,175 | $23,693 |
| 2018 | $29,175 | $22,387 |
| 2019 | N/A | N/A |
| 2020 | $23,819 | $18,170 |
| 2021* | $23,933 | $18,190 |
| 2022* | $24,048 | $18,210 |
| 2023* | $24,164 | $18,230 |
| 2024* | $24,280 | $18,250 |
| 2025* | $24,396 | $18,270 |
