| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $26,790 | $18,188 |
| 2016 | $28,350 | $18,279 |
| 2017 | $29,230 | $18,628 |
| 2018 | $29,230 | $19,456 |
| 2019 | $30,960 | $22,464 |
| 2020 | $32,240 | $23,744 |
| 2021* | $33,572 | $24,798 |
| 2022* | $34,958 | $25,899 |
| 2023* | $36,402 | $27,049 |
| 2024* | $37,905 | $28,250 |
| 2025* | $39,471 | $29,504 |
