| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $39,955 | $25,326 |
| 2016 | $41,155 | $25,501 |
| 2017 | $42,255 | $25,828 |
| 2018 | $42,255 | $24,301 |
| 2019 | $45,025 | $25,851 |
| 2020 | $46,175 | $27,001 |
| 2021* | $47,408 | $27,347 |
| 2022* | $48,674 | $27,697 |
| 2023* | $49,973 | $28,051 |
| 2024* | $51,308 | $28,410 |
| 2025* | $52,677 | $28,774 |