| Year | Total Expenses | Average Net Price |
|---|---|---|
| 2015 | $44,450 | $31,723 |
| 2016 | $45,902 | $31,464 |
| 2017 | $48,118 | $31,485 |
| 2018 | $48,118 | $26,855 |
| 2019 | $50,612 | $29,941 |
| 2020 | $52,010 | $31,339 |
| 2021* | $53,711 | $31,361 |
| 2022* | $55,467 | $31,383 |
| 2023* | $57,281 | $31,405 |
| 2024* | $59,154 | $31,427 |
| 2025* | $61,088 | $31,449 |