| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $31,726 | $22,665 |
| 2016 | $32,684 | $22,943 |
| 2017 | $33,648 | $23,656 |
| 2018 | $33,648 | $22,923 |
| 2019 | $36,652 | $24,878 |
| 2020 | $37,199 | $25,425 |
| 2021* | $38,296 | $25,984 |
| 2022* | $39,426 | $26,556 |
| 2023* | $40,589 | $27,140 |
| 2024* | $41,787 | $27,737 |
| 2025* | $43,019 | $28,348 |
