| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,632 | $16,413 |
| 2016 | $26,391 | $16,910 |
| 2017 | $27,784 | $17,517 |
| 2018 | $27,784 | $16,442 |
| 2019 | $35,287 | $23,344 |
| 2020 | $34,834 | $22,891 |
| 2021* | $35,865 | $23,585 |
| 2022* | $36,927 | $24,299 |
| 2023* | $38,020 | $25,035 |
| 2024* | $39,145 | $25,794 |
| 2025* | $40,304 | $26,576 |