| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $46,952 | $20,358 |
| 2016 | $48,108 | $21,131 |
| 2017 | $49,266 | $18,917 |
| 2018 | $49,266 | $21,488 |
| 2019 | $51,316 | $23,043 |
| 2020 | $52,348 | $24,075 |
| 2021* | $53,610 | $25,154 |
| 2022* | $54,902 | $26,280 |
| 2023* | $56,225 | $27,458 |
| 2024* | $57,580 | $28,688 |
| 2025* | $58,967 | $29,973 |