| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $37,752 | $22,833 |
| 2016 | $39,098 | $24,853 |
| 2017 | $40,376 | $25,597 |
| 2018 | $40,376 | $26,007 |
| 2019 | $43,030 | $22,357 |
| 2020 | $44,830 | $24,157 |
| 2021* | $46,430 | $24,879 |
| 2022* | $48,088 | $25,623 |
| 2023* | $49,805 | $26,389 |
| 2024* | $51,583 | $27,178 |
| 2025* | $53,424 | $27,991 |
