| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $53,186 | $35,210 |
| 2016 | $51,620 | $32,221 |
| 2017 | $53,020 | $31,223 |
| 2018 | $53,020 | $28,034 |
| 2019 | $55,210 | $28,168 |
| 2020 | $56,370 | $29,328 |
| 2021* | $57,554 | $28,419 |
| 2022* | $58,762 | $27,538 |
| 2023* | $59,996 | $26,684 |
| 2024* | $61,256 | $25,857 |
| 2025* | $62,543 | $25,055 |