| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $28,422 | $15,731 |
| 2016 | $28,836 | $14,599 |
| 2017 | $29,424 | $14,541 |
| 2018 | $29,424 | $12,930 |
| 2019 | $30,016 | $14,956 |
| 2020 | $31,050 | $15,990 |
| 2021* | $31,674 | $15,926 |
| 2022* | $32,311 | $15,862 |
| 2023* | $32,960 | $15,799 |
| 2024* | $33,623 | $15,736 |
| 2025* | $34,299 | $15,673 |
