| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $54,491 | $40,810 |
| 2016 | $58,251 | $42,231 |
| 2017 | $59,289 | $43,597 |
| 2018 | $59,289 | $43,219 |
| 2019 | $61,908 | $38,969 |
| 2020 | $62,908 | $39,969 |
| 2021* | $64,028 | $40,996 |
| 2022* | $65,167 | $42,050 |
| 2023* | $66,327 | $43,130 |
| 2024* | $67,508 | $44,239 |
| 2025* | $68,710 | $45,376 |