| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $60,733 | $39,107 |
| 2016 | $62,405 | $39,783 |
| 2017 | $64,796 | $40,741 |
| 2018 | $64,796 | $37,912 |
| 2019 | $68,684 | $37,658 |
| 2020 | $68,847 | $37,821 |
| 2021* | $70,740 | $37,984 |
| 2022* | $72,686 | $38,147 |
| 2023* | $74,685 | $38,311 |
| 2024* | $76,738 | $38,476 |
| 2025* | $78,849 | $38,641 |