| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $32,177 | $9,111 |
| 2016 | $33,200 | $21,946 |
| 2017 | $34,190 | $23,445 |
| 2018 | $34,190 | $21,693 |
| 2019 | $36,110 | $19,178 |
| 2020 | $37,210 | $20,278 |
| 2021* | $38,345 | $21,442 |
| 2022* | $39,514 | $22,673 |
| 2023* | $40,720 | $23,974 |
| 2024* | $41,962 | $25,350 |
| 2025* | $43,241 | $26,805 |