| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $54,985 | $29,107 |
| 2016 | $56,845 | $32,322 |
| 2017 | $57,625 | $31,811 |
| 2018 | $57,625 | $30,961 |
| 2019 | $61,605 | $34,292 |
| 2020 | $63,063 | $35,750 |
| 2021* | $64,558 | $37,269 |
| 2022* | $66,088 | $38,853 |
| 2023* | $67,654 | $40,505 |
| 2024* | $69,257 | $42,226 |
| 2025* | $70,899 | $44,021 |