| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $48,992 | $33,964 |
| 2016 | $49,912 | $35,757 |
| 2017 | $51,036 | $34,761 |
| 2018 | $51,036 | $35,280 |
| 2019 | $54,536 | $38,472 |
| 2020 | $56,260 | $40,196 |
| 2021* | $57,526 | $41,997 |
| 2022* | $58,820 | $43,878 |
| 2023* | $60,144 | $45,844 |
| 2024* | $61,497 | $47,898 |
| 2025* | $62,881 | $50,044 |