| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $36,668 | $24,990 |
| 2016 | $37,996 | $25,854 |
| 2017 | $39,326 | $28,143 |
| 2018 | $39,326 | $27,716 |
| 2019 | $41,300 | $25,944 |
| 2020 | $42,360 | $27,004 |
| 2021* | $43,843 | $27,938 |
| 2022* | $45,377 | $28,905 |
| 2023* | $46,965 | $29,905 |
| 2024* | $48,609 | $30,940 |
| 2025* | $50,310 | $32,010 |