| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $35,113 | $23,278 |
| 2016 | $36,614 | $23,770 |
| 2017 | $39,050 | $25,972 |
| 2018 | $39,050 | $24,364 |
| 2019 | $42,790 | $24,955 |
| 2020 | $43,200 | $25,365 |
| 2021* | $45,045 | $25,900 |
| 2022* | $46,968 | $26,447 |
| 2023* | $48,974 | $27,005 |
| 2024* | $51,065 | $27,575 |
| 2025* | $53,245 | $28,156 |