| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $41,953 | $35,558 |
| 2016 | $42,408 | $39,550 |
| 2017 | $43,228 | $38,735 |
| 2018 | $43,228 | $36,034 |
| 2019 | $43,248 | $32,100 |
| 2020 | $43,288 | $32,140 |
| 2021* | $43,327 | $31,478 |
| 2022* | $43,366 | $30,829 |
| 2023* | $43,405 | $30,194 |
| 2024* | $43,444 | $29,572 |
| 2025* | $43,483 | $28,963 |
