| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,769 | $18,969 |
| 2016 | $28,813 | $19,701 |
| 2017 | $28,797 | $19,330 |
| 2018 | $28,797 | $19,315 |
| 2019 | $28,980 | $18,569 |
| 2020 | $29,442 | $19,031 |
| 2021* | $29,486 | $19,016 |
| 2022* | $29,530 | $19,001 |
| 2023* | $29,575 | $18,985 |
| 2024* | $29,619 | $18,970 |
| 2025* | $29,663 | $18,955 |
