| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $31,878 | $18,081 |
| 2016 | $33,316 | $18,752 |
| 2017 | $34,064 | $19,948 |
| 2018 | $34,064 | $19,083 |
| 2019 | $34,710 | $18,037 |
| 2020 | $37,450 | $20,777 |
| 2021* | $38,293 | $21,548 |
| 2022* | $39,154 | $22,347 |
| 2023* | $40,035 | $23,176 |
| 2024* | $40,936 | $24,036 |
| 2025* | $41,857 | $24,928 |
