| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $38,374 | $22,989 |
| 2016 | $39,560 | $22,371 |
| 2017 | $40,542 | $23,276 |
| 2018 | $40,542 | $22,591 |
| 2019 | $38,150 | $23,337 |
| 2020 | $39,580 | $24,767 |
| 2021* | $40,562 | $25,584 |
| 2022* | $41,568 | $26,429 |
| 2023* | $42,598 | $27,301 |
| 2024* | $43,655 | $28,202 |
| 2025* | $44,737 | $29,132 |