| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $51,190 | $37,458 |
| 2016 | $52,504 | $37,636 |
| 2017 | $54,071 | $40,780 |
| 2018 | $54,071 | $40,616 |
| 2019 | $54,746 | $39,503 |
| 2020 | $56,186 | $40,943 |
| 2021* | $57,630 | $41,140 |
| 2022* | $59,111 | $41,337 |
| 2023* | $60,630 | $41,535 |
| 2024* | $62,188 | $41,735 |
| 2025* | $63,787 | $41,935 |