| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $52,577 | $39,732 |
| 2016 | $55,146 | $41,732 |
| 2017 | $56,372 | $43,499 |
| 2018 | $56,372 | $43,399 |
| 2019 | $58,961 | $46,511 |
| 2020 | $58,517 | $46,067 |
| 2021* | $59,816 | $48,016 |
| 2022* | $61,144 | $50,047 |
| 2023* | $62,501 | $52,164 |
| 2024* | $63,889 | $54,370 |
| 2025* | $65,307 | $56,670 |