| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $34,720 | $18,841 |
| 2016 | $35,544 | $19,759 |
| 2017 | $36,374 | $19,181 |
| 2018 | $36,374 | $19,121 |
| 2019 | $37,670 | $18,862 |
| 2020 | $38,098 | $19,290 |
| 2021* | $38,989 | $19,230 |
| 2022* | $39,902 | $19,171 |
| 2023* | $40,836 | $19,111 |
| 2024* | $41,791 | $19,052 |
| 2025* | $42,769 | $18,993 |
