| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $25,944 | $20,768 |
| 2016 | $26,556 | $21,268 |
| 2017 | $27,476 | $22,567 |
| 2018 | $27,476 | $20,658 |
| 2019 | $25,916 | $18,903 |
| 2020 | $38,721 | $31,708 |
| 2021* | $39,635 | $32,472 |
| 2022* | $40,570 | $33,255 |
| 2023* | $41,528 | $34,056 |
| 2024* | $42,508 | $34,877 |
| 2025* | $43,511 | $35,717 |
