| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $15,175 | $11,539 |
| 2016 | $15,280 | $12,079 |
| 2017 | $15,385 | $12,085 |
| 2018 | $15,385 | $12,021 |
| 2019 | $14,818 | $10,304 |
| 2020 | $15,163 | $10,649 |
| 2021* | $15,268 | $10,654 |
| 2022* | $15,373 | $10,660 |
| 2023* | $15,479 | $10,665 |
| 2024* | $15,586 | $10,670 |
| 2025* | $15,693 | $10,676 |
